0000107263-26-000036 | 10-Q | XBRL Viewer

Provision (Benefit) for Income Taxes

9 Months Ended

Sep. 30, 2026

Provision (Benefit) for Income Taxes [Text Block]

Note 5 – Provision (Benefit) for Income Taxes

Williams’ Provision (benefit) for income taxes includes:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Millions)
Current:
Federal	$	(3)	$	(8)	$	(6)	$	155
State	—		(2)		15		16

	(3)		(10)		9		171
Deferred:
Federal	190		185		620		337
State	34		71		96		105

	224		256		716		442
Provision (benefit) for income taxes	$	221	$	246	$	725	$	613

The effective income tax rates for the total provision (benefit) for the three and nine months ended September 30, 2026 and 2025, are greater than the federal statutory rate, primarily due to the effect of state income taxes.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478822/944-740-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Acquisitions and Divestitures (Tables)

9 Months Ended

Sep. 30, 2026

Business Combination [Line Items]

Business Combination, Pro Forma Information [Table Text Block]

The following pro forma Revenues and Net income (loss) attributable to The Williams Companies, Inc. for the three and nine months ended September 30, 2026 and 2025, respectively, are presented as if the Momentum Acquisition had been completed on January 1, 2025. These pro forma amounts are not necessarily indicative of what the actual results would have been if the acquisition had in fact occurred on the dates or for the periods indicated, nor do they purport to project Revenues or Net income (loss) attributable to The Williams Companies, Inc. for any future periods or as of any date. These amounts do not give effect to any potential cost savings, operating synergies, or revenue enhancements to result from the transaction or the potential costs to achieve these cost savings, operating synergies, and revenue enhancements.


	Three Months Ended September 30, 2026
	As Reported		Pro Forma Momentum (1)		Pro Forma Combined
	(Millions)
Revenues	$	3,223	$	351	$	3,574
Net income (loss) attributable to The Williams Companies, Inc.	700		23		723

	Three Months Ended September 30, 2025
	As Reported		Pro Forma Momentum		Pro Forma Combined
	(Millions)
Revenues	$	2,923	$	327	$	3,250
Net income (loss) attributable to The Williams Companies, Inc.	647		13		660

	Nine Months Ended September 30, 2026
	As Reported		Pro Forma Momentum (1)		Pro Forma Combined
	(Millions)
Revenues	$	9,306	$	1,293	$	10,599
Net income (loss) attributable to The Williams Companies, Inc.	2,392		70		2,462

	Nine Months Ended September 30, 2025
	As Reported		Pro Forma Momentum		Pro Forma Combined
	(Millions)
Revenues	$	8,752	$	1,063	$	9,815
Net income (loss) attributable to The Williams Companies, Inc.	1,884		7		1,891

(1)Excludes results from operations acquired in the acquisition for the period beginning on the acquisition date, as these results are included in the amounts as reported.

Momentum Acquisition [Member]

Business Combination [Line Items]

Business Combination, Recognized Asset Acquired and Liability Assumed

The following table presents the preliminary allocation of the acquisition date fair value of the major classes of the assets acquired and liabilities assumed at September 3, 2026. The fair value of accounts receivable acquired equals contractual amounts receivable. The allocation is considered preliminary because the valuation work has not

been completed due to the ongoing review of the valuation results and validation of significant inputs and assumptions. Preliminary fair value measurements were made for certain acquired assets and liabilities, primarily property, plant, and equipment, which utilized the cost approach; intangible assets and noncontrolling interests, which utilized the income approach; and retained long-term debt, which utilized the market approach. However, adjustments to those measurements may be made in subsequent periods, up to one year from the acquisition date, as new information related to facts and circumstances as of the acquisition date may be identified.


	(Millions)
Cash and cash equivalents	$	228
Trade accounts and other receivables	179
Other current assets	4
Property, plant, and equipment – net	5,763
Intangible assets – net	490
Other noncurrent assets	4
Total identifiable assets acquired	6,668

Current liabilities	(142)
Long-term debt	(898)
Other noncurrent liabilities	(50)
Total liabilities assumed	(1,090)

Net identifiable assets acquired	$	5,578


Noncontrolling interests	(450)
Net assets acquired	$	5,128

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-8

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-4

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479303/805-10-55-47

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-5

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-2

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-3

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-4A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-4

Reference 22: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-4A

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-4A

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-4

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-1

Reference 37: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 39: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 40: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 41: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 42: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

+ Details

Leases

9 Months Ended

Sep. 30, 2026

Leases [Abstract]

Lessor, Operating Leases

Note 7 – Leases

Lessor

Williams is a lessor through certain power purchase agreements, whereby Williams provides power generation and pipeline capacity to a counterparty on a firm basis.

In the third quarter of 2026, the Socrates South power generation facility was placed in service. The related power purchase agreement has an initial noncancellable term of 10 years with an option for the customer to extend the term by an additional five years.

Williams determined that the agreement contains an operating lease. Judgment is used in determining whether the power purchase agreements contain leases and whether they are classified as operating, sales-type, or direct financing leases. Operating lease income is recognized within Service revenues in the Consolidated Statement of Income.

Williams has elected the lessor practical expedient to not separate lease and qualifying nonlease components associated with the power purchase agreements. The qualifying nonlease components primarily consist of certain operating and maintenance services. Williams determined that the lease component is predominant and accounts for the combined components as an operating lease with the related income recognized on a straight-line basis over the lease term. Variable lease income primarily consists of usage-based charges for power generated and fuel used during the period and is recognized in the period earned.

Lease income related to power projects was as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Millions)

Lease income — fixed	$	35	$	—	$	35	$	—
Lease income — variable	5		—		5		—
Total operating lease income	$	40	$	—	$	40	$	—

At September 30, 2026, the gross carrying amount of power generation facilities and associated gas pipeline infrastructure subject to operating leases was $1 billion.

At September 30, 2026, future lease payments to be received under operating lease terms related to in-service power projects were as follows:


	(Millions)
2026	$	51
2027	205
2028	205
2029	205
2030	205
2031	205
Thereafter	942
Total	$	2,018

Revenue Recognition Contract Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Contract With Customer, Asset [Line Items]
Contract with Customer, Asset, Net - Beginning of Period	$ 113	$ 102	$ 109	$ 98
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	24	13	61	71
Contract with Customer, Asset, Reclassified to Receivable	(7)	(5)	(17)	(58)
Capitalized Contract Cost, Accumulated Amortization	(25)	(2)	(48)	(3)
Contract with Customer, Asset, Net - End of Period	105	108	105	108
Transcontinental Gas Pipe Line Company, LLC [Member]
Contract With Customer, Asset [Line Items]
Contract with Customer, Asset, Net - Beginning of Period	12	13	13	10
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	0	0	0	4
Contract with Customer, Asset, Reclassified to Receivable	0	0	0	0
Capitalized Contract Cost, Accumulated Amortization	0	0	(1)	(1)
Contract with Customer, Asset, Net - End of Period	12	13	12	13
Northwest Pipeline LLC [Member]
Contract With Customer, Asset [Line Items]
Contract with Customer, Asset, Net - Beginning of Period	24	23	24	21
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	0	2	0	5
Contract with Customer, Asset, Reclassified to Receivable	0	0	0	0
Capitalized Contract Cost, Accumulated Amortization	(1)	(1)	(1)	(2)
Contract with Customer, Asset, Net - End of Period	$ 23	$ 24	$ 23	$ 24

Acquisitions and Divestitures

9 Months Ended

Sep. 30, 2026

Business Combination [Abstract]

Acquisitions and Divestitures [Text Block]

Note 3 – Acquisitions and Divestitures

Momentum Acquisition

On September 3, 2026, Williams closed on the acquisition of 100 percent of M6 Midstream LLC (Momentum), which owns gathering, processing, and transportation assets in the Haynesville Shale region (Momentum Acquisition). Total consideration for the acquisition was approximately $5.1 billion, including cash and approximately 27 million shares of Williams common stock valued based on the closing market price as of the transaction close date and subject to certain holding restrictions. Williams retained $869 million outstanding principal amount of long-term debt issued by New Generation Gas Gathering LLC (NG3), a partially-owned consolidated subsidiary of Momentum. Purchases of businesses, net of cash acquired in the Williams Consolidated Statement of Cash Flows includes $2.8 billion reflecting the cash purchase price, reduced for the cash acquired as presented in the purchase price allocation. The purpose of this acquisition was to strengthen Williams’ position in the Haynesville Shale region and advance its strategy to connect growing sources of natural gas production with expanding demand along the Gulf Coast. Assets acquired, acquisition-related costs incurred, and results of operations realized are included within Williams’ West segment.

During the period from the acquisition date of September 3, 2026 to September 30, 2026, the operations acquired in the Momentum Acquisition contributed Revenues of $113 million and Modified EBITDA (as defined in Note 11 – Segment Disclosures) of $40 million.

Acquisition-related costs for the Momentum Acquisition totaled $33 million and are included in General and administrative expenses.

Williams accounted for the Momentum Acquisition as a business combination, which requires, among other things, that identifiable assets acquired and liabilities assumed be recognized at their acquisition date fair values.


	(Millions)
Cash and cash equivalents	$	228
Trade accounts and other receivables	179
Other current assets	4
Property, plant, and equipment – net	5,763
Intangible assets – net	490
Other noncurrent assets	4
Total identifiable assets acquired	6,668

Current liabilities	(142)
Long-term debt	(898)
Other noncurrent liabilities	(50)
Total liabilities assumed	(1,090)

Net identifiable assets acquired	$	5,578


Noncontrolling interests	(450)
Net assets acquired	$	5,128

Other intangible assets recognized in the Momentum Acquisition are related to contractual customer relationships from agreements with customers under which Williams performs gas gathering and related services. The basis for determining the value of these intangible assets is estimated future net cash flows to be derived from acquired contractual customer relationships discounted using a risk-adjusted discount rate. These intangible assets are being amortized on a straight-line basis over a period of 20 years which represents the term over which the contractual customer relationships are expected to contribute to Williams’ cash flows. The majority of the expected future revenues from these contractual customer relationships are impacted by Williams’ ability and intent to renew or renegotiate existing customer contracts. Williams expenses costs incurred to renew or extend the terms of its gas gathering contracts with customers. Based on the estimated future revenues during the current contract periods (as estimated at the time of the acquisition), the weighted-average period prior to the next renewal or extension of the existing contractual customer relationships is approximately 9 years.

Supplemental Pro Forma


	Three Months Ended September 30, 2026
	As Reported		Pro Forma Momentum (1)		Pro Forma Combined
	(Millions)
Revenues	$	3,223	$	351	$	3,574
Net income (loss) attributable to The Williams Companies, Inc.	700		23		723

	Three Months Ended September 30, 2025
	As Reported		Pro Forma Momentum		Pro Forma Combined
	(Millions)
Revenues	$	2,923	$	327	$	3,250
Net income (loss) attributable to The Williams Companies, Inc.	647		13		660

	Nine Months Ended September 30, 2026
	As Reported		Pro Forma Momentum (1)		Pro Forma Combined
	(Millions)
Revenues	$	9,306	$	1,293	$	10,599
Net income (loss) attributable to The Williams Companies, Inc.	2,392		70		2,462

	Nine Months Ended September 30, 2025
	As Reported		Pro Forma Momentum		Pro Forma Combined
	(Millions)
Revenues	$	8,752	$	1,063	$	9,815
Net income (loss) attributable to The Williams Companies, Inc.	1,884		7		1,891

(1)Excludes results from operations acquired in the acquisition for the period beginning on the acquisition date, as these results are included in the amounts as reported.

Sale of Permian Interests

Consolidated Permian Gathering Assets

In August 2026, Williams completed the sale of certain gas gathering assets in the Permian basin within its West segment for total consideration of $139 million, resulting in the recognition of an $83 million gain in the third quarter of 2026. The gain is reflected in Gain on sale of certain assets, and the proceeds are reflected in Proceeds from sale of business. The results of operations for this disposal group, excluding the gain noted, were not significant for the reporting periods.

Brazos Permian II Equity-Method Investment

In June 2026, Williams completed the sale of an equity-method investment in Brazos Permian II, LLC within its West segment for total consideration of $143 million, resulting in the recognition of a $127 million gain reflected in Other investing income (loss) – net. The consideration received consisted primarily of publicly traded limited partner units of the acquirer measured at fair value on the transaction date, as well as cash reflected in Proceeds from disposition of equity-method investments. The limited partner units are classified as Level 1 within the fair value hierarchy and are remeasured at fair value each reporting period, with changes in fair value recognized in earnings (see Note 8 – Fair Value Measurements and Guarantees). Williams is required to hold the limited partner units for a minimum of six months following closing.

Sale of Mid-Continent Gathering Assets

In February 2026, Williams closed on the sale of certain gas gathering assets in the Mid-Continent region within its West segment for total consideration of $48 million. This disposal group was classified as held for sale, with the associated assets and liabilities included in Assets held for sale and Liabilities held for sale, respectively, at December 31, 2025, and an impairment was recognized (see Note 8 – Fair Value Measurements and Guarantees). The proceeds are reflected in Proceeds from sale of business. The results of operations for this disposal group were not significant for the reporting periods.

Sale of South Mansfield Upstream Interests

In October 2025, Williams entered into an agreement to sell its interests in certain upstream ventures in the South Mansfield area of the Haynesville Shale region, included in upstream operations, for consideration of $398 million with additional contingent consideration to possibly be received through 2029. Williams classified this disposal group as held for sale, with the associated assets and liabilities included in Assets held for sale and Liabilities held for sale, respectively, at December 31, 2025. The transaction closed on January 30, 2026, and as a result of the sale Williams recognized a gain of $182 million in the first quarter of 2026 and an additional gain of $12 million in the second quarter of 2026. The gain is reflected in Gain on sale of certain assets, and the proceeds are reflected in Dispositions – net. The results of operations for this disposal group, excluding the gains noted, were not significant for the reporting periods.

Commodity Derivatives - Contingent Features (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Additional Collateral, Aggregate Fair Value	$ 69
Collateral Already Posted, Aggregate Fair Value	$ 220	$ 189

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Long-Term Debt Issuances and Retirements (Details) - USD ($)
$ in Millions

Sep. 03, 2026

Mar. 02, 2026

Sep. 10, 2026

Jan. 08, 2026

Nov. 20, 2025

The Williams Companies, Inc. [Member] | 5.00 Percent Senior Unsecured Notes Due 2029

Debt Instrument [Line Items]

Long-term debt face amount

$ 500

Long-term debt interest rate

5.00%

The Williams Companies, Inc. [Member] | 5.60 Percent Senior Unsecured Notes Due 2033

Debt Instrument [Line Items]

Long-term debt face amount

$ 1,000

Long-term debt interest rate

5.60%

The Williams Companies, Inc. [Member] | 5.80 Percent Senior Unsecured Notes Due 2036

Debt Instrument [Line Items]

Long-term debt face amount

$ 750

Long-term debt interest rate

5.80%

The Williams Companies, Inc. [Member] | 6.40 Percent Senior Unsecured Notes Due 2056

Debt Instrument [Line Items]

Long-term debt face amount

$ 500

Long-term debt interest rate

6.40%

The Williams Companies, Inc. [Member] | 5.65 Percent Senior Unsecured Notes Due 2033

Debt Instrument [Line Items]

Long-term debt face amount

^[1]

$ 500

Long-term debt interest rate

^[1]

5.65%

The Williams Companies, Inc. [Member] | 5.15 Percent Senior Unsecured Notes Due 2036

Debt Instrument [Line Items]

Long-term debt face amount

$ 1,250

Long-term debt interest rate

5.15%

The Williams Companies, Inc. [Member] | 5.95 Percent Senior Unsecured Notes Due 2056

Debt Instrument [Line Items]

Long-term debt face amount

$ 1,000

Long-term debt interest rate

5.95%

The Williams Companies, Inc. [Member] | 5.40 Percent Senior Unsecured Notes Due 2026

Debt Instrument [Line Items]

Long-term debt interest rate

5.40%

Extinguishment of Debt, Amount

$ 1,100

Transcontinental Gas Pipe Line Company, LLC [Member] | 5.1 Percent Senior Unsecured Notes Due 2036

Debt Instrument [Line Items]

Long-term debt face amount

$ 1,000

Long-term debt interest rate

5.10%

Transcontinental Gas Pipe Line Company, LLC [Member] | 5.75 Percent Senior Unsecured Notes Due 2056

Debt Instrument [Line Items]

Long-term debt face amount

$ 700

Long-term debt interest rate

5.75%

Momentum Acquisition [Member] | West [Member] | NG3 [Member]

Debt Instrument [Line Items]

Business Combination, Consideration Transferred, Liabilities Incurred

$ 869

[1]	Additional issuance of the 5.65 percent senior notes due 2033 issued on March 2, 2023, and trade interchangeably with such notes.

Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2026

Variable Interest Entity Disclosures [Abstract]

Schedule of Variable Interest Entities [Table Text Block]

The following table presents amounts included in the Consolidated Balance Sheet that are only for the use or obligation of the consolidated VIEs:



	September 30,		December 31,
	2026		2025
	(Millions)
Assets (liabilities):
Cash and cash equivalents	$	494	$	53
Trade accounts and other receivables	224		155
Inventories	9		6
Other current assets and deferred charges	8		5
Property, plant, and equipment – net	8,919		4,412
Intangible assets – net	1,749		1,831
Regulatory assets, deferred charges, and other	52		23
Accounts payable	(963)		(56)
Other current liabilities	(28)		(19)

Regulatory liabilities, deferred income, and other	(203)		(78)

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

Debt and Banking Arrangements (Tables)

9 Months Ended

Sep. 30, 2026

Debt Disclosure [Abstract]

Schedule of Debt Issuances

Issuances in 2026 are as follows:


Issue Date	Maturity Date	Amount		Rate
		(Millions)
Williams’ Public Issuances:
September 10, 2026	October 15, 2029	$	500	5.000%
September 10, 2026	September 15, 2033	1,000		5.600%
September 10, 2026	September 15, 2036	750		5.800%
September 10, 2026	September 15, 2056	500		6.400%
January 8, 2026 (1)	March 15, 2033	500		5.650%
January 8, 2026	March 15, 2036	1,250		5.150%
January 8, 2026	March 15, 2056	1,000		5.950%

________________

(1) Additional issuance of the 5.65 percent senior notes due 2033 issued on March 2, 2023, and trade interchangeably with such notes.

Schedule of Extinguishment of Debt

Retirements in 2026 are as follows:

Date of Retirement

Maturity Date

Amount

Rate

(Millions)

Williams:

March 2, 2026

1,100

5.400%

Schedule of Line of Credit Facilities [Table Text Block]


	September 30, 2026
	Stated Capacity		Outstanding
	(Millions)
Williams Credit Agreement (1)(2)	$	3,750	$	—
364-Day Credit Agreement (2)	1,000		—
Letters of credit under certain bilateral bank agreements			17

________________

(1) In managing its available liquidity, Williams does not expect a maximum outstanding amount in excess of the capacity of its credit facility inclusive of any outstanding amounts under the commercial paper program.

(2) Williams expects to be in compliance with the associated covenants for the September 30, 2026, reporting period.

Consolidated Balance Sheet (Unaudited) - Williams - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 1,756	$ 63
Receivables, Net, Current	2,098	2,084
Inventories	319	314
Assets held for sale (Note 3)	0	318
Derivative assets	132	209
Other current assets and deferred charges	427	256
Total current assets	4,732	3,244
Investments	4,507	4,559
Property, plant, and equipment	73,849	62,010
Accumulated depreciation, depletion, and amortization	(21,318)	(20,014)
Property, plant, and equipment – net	52,531	41,996
Intangible assets – net	6,972	6,763
Regulatory assets, deferred charges, and other	1,938	2,011
Total assets	70,680	58,573
Current liabilities:
Accounts payable	2,441	2,224
Liabilities held for sale (Note 3)	0	63
Derivative Liability, Current	135	135
Other current liabilities	1,545	1,639
Commercial paper	0	700
Long-term debt due within one year	2,202	1,345
Total current liabilities	6,323	6,106
Long-term debt	31,732	27,316
Deferred income tax liabilities	5,940	5,170
Regulatory liabilities, deferred income, and other	5,191	4,986
Contingent liabilities and commitments (Note 10)
Stockholders’ equity:
Preferred stock ($1 par value; 30 million shares authorized at September 30, 2026 and December 31, 2025; 35 thousand shares issued at September 30, 2026 and December 31, 2025)	35	35
Common stock ($1 par value; 1,470 million shares authorized at September 30, 2026 and December 31, 2025; 1,290 million shares issued at September 30, 2026 and 1,261 million shares issued at December 31, 2025)	1,290	1,261
Capital in excess of par value	27,257	24,801
Retained deficit	(11,794)	(12,237)
Accumulated other comprehensive income (loss)	125	127
Treasury stock, at cost (39 million shares at September 30, 2026 and December 31, 2025 of common stock)	(1,180)	(1,180)
Total stockholders’ equity	15,733	12,807
Noncontrolling interests in consolidated subsidiaries	5,761	2,188
Total equity	21,494	14,995
Total liabilities and equity	$ 70,680	$ 58,573

Segment Disclosures (Tables)

9 Months Ended

Sep. 30, 2026

Segment Reporting [Abstract]

Reconciliation of revenue from segment to consolidated [Table Text Block]

The following tables present revenues, Modified EBITDA, significant expenses, and certain segment assets measures:


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)
Three Months Ended September 30, 2026
Segment revenues:
Service revenues
External	$	1,304	$	533	$	471	$	—	$	2,308
Internal	24		3		67		—		94
Total service revenues	1,328		536		538		—		2,402
Total service revenues – commodity consideration	32		—		25		—		57
Product sales
External	43		7		84		664		798
Internal	127		9		212		(107)		241
Total product sales	170		16		296		557		1,039
Net gain (loss) from commodity derivatives
Realized	(4)		—		—		(3)		(7)
Unrealized	—		—		—		32		32
Total net gain (loss) from commodity derivatives (2)	(4)		—		—		29		25
Total revenues of reportable segments	$	1,526	$	552	$	859	$	586	$	3,523
Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(175)		(16)		(285)		(545)

Operating and administrative expenses (3)	(353)		(111)		(215)		(19)
Recoverable power, transportation, and storage costs (4)	(76)		(49)		(18)		—
Other segment income (expenses) - net (5)	40		(3)		(1)		—
Gain on sale of certain assets (Note 3)	—		—		83		—
Proportional Modified EBITDA of equity-method investments	38		169		28		17
Total Modified EBITDA of reportable segments	$	1,000	$	542	$	451	$	39	$	2,032
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									52

Depreciation, depletion, and amortization expenses									(620)
Equity earnings (losses)									157
Other investing income (loss) - net (Note 3)									30
Interest expense									(385)
Accretion expense associated with AROs for nonregulated operations									(26)
Proportional Modified EBITDA of equity-method investments									(252)
Income (loss) before income taxes									$	988

Additions to long-lived segment assets	$	2,139	$	28	$	5,022	$	—	$	7,189


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)

Three Months Ended September 30, 2025
Segment revenues:
Service revenues
External	$	1,213	$	495	$	409	$	—	$	2,117
Internal	24		4		61		—		89
Total service revenues	1,237		499		470		—		2,206
Total service revenues – commodity consideration	24		—		21		—		45
Product sales
External	42		7		38		576		663
Internal	88		24		181		(161)		132
Total product sales	130		31		219		415		795
Net gain (loss) from commodity derivatives
Realized	1		—		2		(11)		(8)
Unrealized	—		—		—		44		44
Total net gain (loss) from commodity derivatives (2)	1		—		2		33		36
Total revenues of reportable segments	$	1,392	$	530	$	712	$	448	$	3,082
Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(139)		(25)		(211)		(398)
Net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses	—		—		—		2
Operating and administrative expenses (3)	(290)		(114)		(150)		(14)
Recoverable power, transportation, and storage costs (4)	(64)		(42)		(17)		—
Other segment income (expenses) - net (5)	37		(5)		(28)		—

Proportional Modified EBITDA of equity-method investments	37		161		36		16
Total Modified EBITDA of reportable segments	$	973	$	505	$	342	$	54	$	1,874
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									93
Depreciation, depletion, and amortization expenses									(564)
Equity earnings (losses)									152
Other investing income (loss) - net									19
Interest expense									(372)
Accretion expense associated with AROs for nonregulated operations									(23)
Proportional Modified EBITDA of equity-method investments									(250)
Income (loss) before income taxes									$	929

Additions to long-lived segment assets	$	754	$	53	$	167	$	—	$	974


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)


Nine Months Ended September 30, 2026
Segment revenues:
Service revenues
External	$	3,780	$	1,559	$	1,319	$	—	$	6,658
Internal	72		10		201		—		283
Total service revenues	3,852		1,569		1,520		—		6,941
Total service revenues – commodity consideration	81		1		66		—		148
Product sales
External	104		29		155		2,282		2,570
Internal	324		43		599		(324)		642
Total product sales	428		72		754		1,958		3,212
Net gain (loss) from commodity derivatives
Realized	(9)		—		(2)		(159)		(170)
Unrealized	—		—		—		(41)		(41)
Total net gain (loss) from commodity derivatives (2)	(9)		—		(2)		(200)		(211)
Total revenues of reportable segments	$	4,352	$	1,642	$	2,338	$	1,758	$	10,090





Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(446)		(73)		(723)		(1,530)
Net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses	—		—		—		1
Operating and administrative expenses (3)	(935)		(323)		(530)		(71)
Recoverable power, transportation, and storage costs (4)	(201)		(146)		(54)		—
Other segment income (expenses) - net (5)	88		1		4		(1)

Gain on sale of certain assets (Note 3)	—		—		83		—
Proportional Modified EBITDA of equity-method investments	111		505		99		45
Total Modified EBITDA of reportable segments	$	2,969	$	1,606	$	1,217	$	202	$	5,994
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									188
Gain on sale of certain upstream assets (Note 3)									194
Depreciation, depletion, and amortization expenses									(1,796)
Equity earnings (losses)									477
Other investing income (loss) - net (Note 3)									188
Interest expense									(1,132)
Accretion expense associated with AROs for nonregulated operations									(73)
Proportional Modified EBITDA of equity-method investments									(760)
Income (loss) before income taxes									$	3,280











Additions to long-lived segment assets	$	5,125	$	71	$	5,130	$	1	$	10,327


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)

Nine Months Ended September 30, 2025
Segment revenues:
Service revenues
External	$	3,476	$	1,482	$	1,195	$	—	$	6,153
Internal	72		11		159		—		242
Total service revenues	3,548		1,493		1,354		—		6,395
Total service revenues – commodity consideration	75		1		65		—		141
Product sales
External	99		42		109		2,037		2,287
Internal	254		90		584		(480)		448
Total product sales	353		132		693		1,557		2,735
Net gain (loss) from commodity derivatives
Realized	—		—		1		(44)		(43)
Unrealized	—		—		—		35		35
Total net gain (loss) from commodity derivatives (2)	—		—		1		(9)		(8)
Total revenues of reportable segments	$	3,976	$	1,626	$	2,113	$	1,548	$	9,263





Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(381)		(115)		(666)		(1,332)
Net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses	—		—		—		4
Operating and administrative expenses (3)	(846)		(333)		(452)		(72)
Recoverable power, transportation, and storage costs (4)	(189)		(125)		(46)		—
Other segment income (expenses) - net (5)	52		(7)		(18)		1

Proportional Modified EBITDA of equity-method investments	110		474		106		27
Total Modified EBITDA of reportable segments	$	2,722	$	1,520	$	1,037	$	176	$	5,455
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									286

Depreciation, depletion, and amortization expenses									(1,754)
Equity earnings (losses)									449
Other investing income (loss) - net									31
Interest expense									(1,071)
Accretion expense associated with AROs for nonregulated operations									(71)
Proportional Modified EBITDA of equity-method investments									(717)
Income (loss) before income taxes									$	2,608











Additions to long-lived segment assets	$	1,781	$	166	$	962	$	1	$	2,910

As of September 30, 2026
Equity-method investments by reportable segment	$	575	$	3,168	$	428	$	261	$	4,432
Segment assets	$	30,966	$	12,166	$	18,366	$	276	$	61,774

As of December 31, 2025
Equity-method investments by reportable segment	$	512	$	3,236	$	460	$	292	$	4,500
Segment assets	$	26,515	$	12,533	$	12,398	$	317	$	51,763

_______________________

(1) As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities.

(2) Williams records transactions that qualify as commodity derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses from commodity derivatives held for energy trading purposes are presented on a net basis in revenue.

(3) Segment operating and administrative expenses primarily include payroll, maintenance and operating costs and taxes, and general and administrative expenses, including acquisition and transition-related expenses. It also includes project execution, information technology, finance and accounting, real estate and aviation, central engineering services, safety and operational discipline, supply chain and digital transformation, corporate strategic development, human resources, legal and government affairs, and executive and audit support services costs which are centrally managed and allocated to segments.

(4) Recoverable power, transportation and storage costs are charges incurred which are reimbursable pursuant to FERC stipulations, customer contracts, or certain power purchase agreements.

(5) Other segment income (expenses) - net primarily includes equity AFUDC and regulatory credits and charges related to Williams’ regulated operations, as well as the write-off of certain compression assets in the West segment in the third quarter of 2025.

- Definition

Tabular disclosure of segment reporting. Includes, but is not limited to, reconciliation of reportable segment amount to corresponding consolidated total.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-34

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26C

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26B

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26A

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 25
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-25

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-15

+ Details

Fair Value Measurements and Guarantees

9 Months Ended

Sep. 30, 2026

Fair Value Disclosures [Abstract]

Fair Value Measurements and Guarantees [Text Block]

Note 8 – Fair Value Measurements and Guarantees

The following table presents, by level within the fair value hierarchy, certain of Williams’, Transco’s, and NWP’s significant financial assets and liabilities. The carrying values of cash and cash equivalents, accounts receivable, accounts payable, and commercial paper approximate fair value because of the short-term nature of these instruments. Therefore, these assets and liabilities are not presented in the following table.


					Fair Value Measurements Using
	Carrying Amount		Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Millions)
Assets (liabilities) at September 30, 2026:
Measured on a recurring basis:
ARO Trust - Transco	$	320	$	320	$	320	$	—	$	—
Commodity derivative assets (1)	262		639		383		149		107
Commodity derivative liabilities (1)	(301)		(898)		(525)		(287)		(86)
Equity securities	125		125		125		—		—


Additional disclosures:


Guarantees	(34)		(26)		—		(10)		(16)
Debt by issuer, including current portion:
Williams	(26,034)		(24,381)		—		(24,381)		—
Transco	(5,874)		(5,464)		—		(5,464)		—
NWP	(749)		(747)		—		(747)		—
MountainWest	(380)		(365)		—		(365)		—
NG3 (see Note 3)	(897)		(896)		—		(896)		—
Total debt	(33,934)		(31,853)		—		(31,853)		—

Assets (liabilities) at December 31, 2025:
Measured on a recurring basis:
ARO Trust - Transco	$	356	$	356	$	356	$	—	$	—
Commodity derivative assets (1)	336		722		431		158		133
Commodity derivative liabilities (1)	(340)		(915)		(497)		(270)		(148)

Additional disclosures:

Guarantees	(35)		(28)		—		(12)		(16)
Debt by issuer, including current portion:
Williams	(21,649)		(21,556)		—		(21,556)		—
Transco	(5,888)		(5,941)		—		(5,941)		—
NWP	(748)		(747)		—		(747)		—
MountainWest	(376)		(385)		—		(385)		—
Total debt	(28,661)		(28,629)		—		(28,629)		—

(1)The carrying amount is presented net of counterparty offsetting arrangements and collateral (see Note 9 – Commodity Derivatives).

Fair Value Methods

The following methods and assumptions are used in estimating the fair value of financial instruments:

Assets and Liabilities Measured at Fair Value on a Recurring Basis

ARO Trust

Transco is entitled to collect rates in the amounts necessary to fund its future asset retirement obligations (AROs) and deposits a portion of the collected rates into an external trust (ARO Trust). The ARO Trust invests in a moderate risk portfolio of actively traded mutual funds that are measured at fair value on a recurring basis based on quoted prices in an active market and is reported in Regulatory assets, deferred charges, and other in Williams’ Consolidated Balance Sheet and in Deferred charges and other in the Transco Balance Sheet. The Money market fund held in the ARO Trust is considered an investment. Both realized and unrealized gains and losses are ultimately recorded to the ARO regulatory asset. The current annual funding obligation is approximately $51 million.

Investments within the ARO Trust were as follows:


	September 30, 2026				December 31, 2025
	Amortized Cost Basis		Fair Value		Amortized Cost Basis		Fair Value
	(Millions)
Money market fund	$	6	$	6	$	34	$	34
U.S. equity funds	39		147		53		169
International equity fund	32		58		32		51
Municipal bond fund	117		109		104		102
Total	$	194	$	320	$	223	$	356

Commodity derivatives

Williams’ commodity derivatives include exchange-traded contracts and over-the-counter (OTC) contracts, which consist of physical forwards, futures, and swaps that are measured at fair value on a recurring basis. Williams also has other derivatives related to asset management agreements and other contracts that require physical delivery. Derivatives classified as Level 1 are valued using New York Mercantile Exchange (NYMEX) futures prices. Derivatives classified as Level 2 are valued using basis transactions that represent the cost to transport natural gas from a NYMEX delivery point to the contract delivery point. These transactions are based on quotes obtained either through electronic trading platforms or directly from brokers. Derivatives classified as Level 3 are valued using a combination of observable and unobservable inputs. See Note 9 – Commodity Derivatives for additional information.

Equity securities

Williams has certain investments in equity securities consisting of publicly traded limited partner units that are actively traded on the New York Stock Exchange (see Note 3 – Acquisitions and Divestitures). These equity securities are classified as Level 1 within the fair value hierarchy and are measured at fair value on a recurring basis using quoted market prices. Changes in fair value are recognized in Other investing income (loss) – net and the fair value is reported in Other current assets and deferred charges.

Additional Fair Value Disclosures

Guarantees

Guarantees primarily consist of a guarantee Williams has provided in the event of nonpayment by a previously owned communications subsidiary, Williams Communications Group, Inc., (WilTel), on a lease performance obligation that extends through 2042. Guarantees also include an indemnification related to a disposed operation.

To estimate the fair value of the WilTel guarantee, an estimated default rate is applied to the sum of the future contractual lease payments using an income approach. The estimated default rate is determined by obtaining the average cumulative issuer-weighted default rate based on the credit rating of WilTel’s current owner and the term of the underlying obligation. The default rate is published by Moody’s Investors Service. The carrying value of the WilTel guarantee is reported in Other current liabilities. The maximum potential undiscounted liquidity exposure is approximately $20 million at September 30, 2026. The exposure declines systematically through the remaining term of WilTel’s obligation.

The fair value of the guarantee associated with the indemnification related to a disposed operation was estimated using an income approach that considered probability-weighted scenarios of potential levels of future performance. The terms of the indemnification do not limit the maximum potential future payments associated with the guarantee. The carrying value of this guarantee is reported in Regulatory liabilities, deferred income, and other.

Williams is required by its revolving credit agreement to indemnify lenders for certain taxes required to be withheld from payments due to the lenders and for certain tax payments made by the lenders. The maximum potential amount of future payments under these indemnifications is based on the related borrowings and such future payments cannot currently be determined. These indemnifications generally continue indefinitely unless limited by the underlying tax regulations and have no carrying value. Williams has never been called upon to perform under these indemnifications and there is no current expectation of a future claim.

Long-term debt, including current portion

The disclosed fair value of long-term debt is determined primarily by a market approach using broker quoted indicative period-end bond prices. The quoted prices are based on observable transactions in less active markets for the debt or similar instruments. Transco includes financing obligations associated with certain completed projects, which were measured at fair value using an income approach.

Nonrecurring Fair Value Measurements

In December 2025, Williams’ management approved a plan to sell certain gas gathering assets in the Mid-Continent region. These operations were designated as held for sale at December 31, 2025. Accordingly, the disposal group, inclusive of Intangible assets – net, was measured at fair value using the expected sales price under a third-party contract, resulting in a fourth quarter 2025 impairment charge of $176 million within the West segment. Using these inputs, the fair value of the disposal group was measured at $48 million and classified within Level 2 of the fair value hierarchy. The estimated fair value of the Property, plant, and equipment – net and Intangible assets – net were determined using a market approach incorporating indications of interest from third parties. This disposal group was sold in the first quarter of 2026 (see Note 3 – Acquisitions and Divestitures).

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
-SubTopic 820
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478119/940-820-50-1

+ Details

Commodity Derivatives - Financial Statement Presentation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Derivative assets		Derivative assets		Derivative assets
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Derivative Liability, Current		Derivative Liability, Current		Derivative Liability, Current
Energy Related Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Liability	$ (377)		$ (377)		$ (386)
Derivative Liability, Fair Value, Gross Asset	597		597		575
Derivative Asset	262		262		336
Derivative Liability	(301)		(301)		(340)
Gain (Loss) on Derivative Instruments, Net, Pretax	2	$ 58	(265)	$ 32
Energy Related Derivative \| Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	0	2	(2)	2
Energy Related Derivative \| Income Statement Location [Axis]: us-gaap:Revenues
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	2	56	(263)	30
Not Designated as Hedging Instrument [Member] \| Energy Related Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	639		639		722
Derivative Liability, Fair Value, Gross Liability	(898)		(898)		(915)
Not Designated as Hedging Instrument [Member] \| Energy Related Derivative \| Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized	0	0	(3)	(2)
Unrealized	0	2	1	4
Not Designated as Hedging Instrument [Member] \| Energy Related Derivative \| Income Statement Location [Axis]: us-gaap:Revenues
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized	(20)	7	(201)	(21)
Unrealized	22	$ 49	(62)	$ 51
Balance Sheet Location [Axis]: us-gaap:DerivativeAssetsCurrent \| Not Designated as Hedging Instrument [Member] \| Energy Related Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	420		420		494
Balance Sheet Location [Axis]: us-gaap:DerivativeLiabilitiesCurrent \| Not Designated as Hedging Instrument [Member] \| Energy Related Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value, Gross Liability	(539)		(539)		(535)
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent \| Not Designated as Hedging Instrument [Member] \| Energy Related Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset	219		219		228
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesAndDeferredRevenueNoncurrent \| Not Designated as Hedging Instrument [Member] \| Energy Related Derivative
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ (359)		$ (359)		$ (380)

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2026	Oct. 29, 2026
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2026
Document Transition Report	false
Entity Registrant Name	Williams Companies, Inc.
Entity File Number	1-4174
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	73-0569878
Entity Address, Address Line One	One Williams Center
Entity Address, City or Town	Tulsa
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	74172
City Area Code	800
Local Phone Number	945-5426
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	WMB
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,250,202,516
Entity Central Index Key	0000107263
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Transcontinental Gas Pipe Line Company, LLC [Member]
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2026
Document Transition Report	false
Entity Registrant Name	Transcontinental Gas Pipe Line Company, LLC
Entity File Number	1-7584
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-1079400
Entity Address, Address Line One	2800 Post Oak Boulevard
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77056
City Area Code	713
Local Phone Number	215-2000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		0
Entity Central Index Key	0000099250
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Northwest Pipeline LLC [Member]
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2026
Document Transition Report	false
Entity Registrant Name	Northwest Pipeline LLC
Entity File Number	1-7414
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-1157701
Entity Address, Address Line One	One Williams Center
Entity Address, City or Town	Tulsa
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	74172
City Area Code	800
Local Phone Number	945-5426
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		0
Entity Central Index Key	0000110019
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31

Revenue Recognition Accounts Receivable (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net, Current	$ 2,098	$ 2,084
Derivative Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net, Current	133	444
Accounts Receivable Related To Contracts With Customers [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net, Current	1,697	1,532
Other Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net, Current	$ 268	$ 108

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Credit Facility and Commercial Paper (Details)
$ in Millions

May 19, 2026

USD ($)

Sep. 30, 2026

USD ($)

Dec. 31, 2025

USD ($)

Credit Facility and Commercial Paper [Line Items]

Commercial paper, outstanding

$ 0

$ 700

Williams Companies Inc [Member]

Credit Facility and Commercial Paper [Line Items]

Acquisition Trigger Amount

$ 25

Maximum ratio of debt to EBITDA after acquisition

5.5

Williams Companies Inc [Member] | Revolving Credit Facility

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

$ 3,750

3,750

^[1],[2]

Additional amount by which credit facility can be increased

500

Line Of Credit Facility Maximum Borrowing Capacity After Available Increased Commitments

4,250

Credit facility, loans outstanding

^[1],[2]

Williams Companies Inc [Member] | Swing Line Loan [Member]

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

200

Williams Companies Inc [Member] | Letters of credit [Member]

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

500

Williams Companies Inc [Member] | 364-Day Credit Agreement

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

1,000

^[2]

Additional amount by which credit facility can be increased

150

Line Of Credit Facility Maximum Borrowing Capacity After Available Increased Commitments

$ 1,150

Credit facility, loans outstanding

^[2]

Williams Companies Inc [Member] | Letters Of Credit Under Certain Bilateral Bank Agreements [Member]

Credit Facility and Commercial Paper [Line Items]

Credit facility, letters of credit outstanding

Williams Companies Inc [Member] | Commercial paper [Member]

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

$ 3,500

Transcontinental Gas Pipe Line Company, LLC [Member]

Credit Facility and Commercial Paper [Line Items]

Maximum ratio of debt to capitalization

65.00%

Transcontinental Gas Pipe Line Company, LLC [Member] | Letters of credit [Member]

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

$ 500

Transcontinental Gas Pipe Line Company, LLC [Member] | 364-Day Credit Agreement

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

$ 100

Northwest Pipeline LLC [Member]

Credit Facility and Commercial Paper [Line Items]

Maximum ratio of debt to capitalization

65.00%

Northwest Pipeline LLC [Member] | Letters of credit [Member]

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

$ 500

Northwest Pipeline LLC [Member] | 364-Day Credit Agreement

Credit Facility and Commercial Paper [Line Items]

Credit facility, capacity

$ 100

Dec21 And Subsequent Quarters [Member] | Williams Companies Inc [Member]

Credit Facility and Commercial Paper [Line Items]

Maximum ratio of debt to EBITDA

5.0

[1]	In managing its available liquidity, Williams does not expect a maximum outstanding amount in excess of the capacity of its credit facility inclusive of any outstanding amounts under the commercial paper program.
[2]	Williams expects to be in compliance with the associated covenants for the September 30, 2026, reporting period.

Consolidated Statement of Comprehensive Income (Parenthetical) (Unaudited) - Williams - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Tax	$ 0	$ 3	$ 1	$ 2

- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-12

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482765/220-10-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481694/830-30-45-17

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481694/830-30-45-20

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-10

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482659/740-20-45-11

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(21))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(23))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482659/740-20-45-2

+ Details

Statement of Cash Flows (Unaudited) - NWP - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
OPERATING ACTIVITIES:
Net income (loss)	$ 2,555	$ 1,995
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation, depletion, and amortization	1,796	1,754
Cash provided (used) by changes in current assets and liabilities:
Increase (Decrease) in Inventories	(18)	(66)
Other current assets and deferred charges	(40)	(43)
Other current liabilities	(196)	95
Other, including changes in noncurrent assets and liabilities	(87)	(128)
Net cash provided (used) by operating activities	4,484	4,322
FINANCING ACTIVITIES:
Proceeds from other financing obligations	5,538	2,994
Payments on other financing obligations	(1,137)	(1,733)
Net cash provided (used) by financing activities	5,207	(1,110)
INVESTING ACTIVITIES:
Capital expenditures (1)	(5,682)	(2,938)
Net cash provided (used) by investing activities	(7,998)	(3,202)
Increase (decrease) in cash and cash equivalents	1,693	10
Cash and cash equivalents at beginning of year	63	60
Cash and cash equivalents at end of period	1,756	70
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
(1) Increases to property, plant, and equipment, exclusive of equity AFUDC	(6,013)	(3,079)
Capital expenditures	(5,682)	(2,938)
Northwest Pipeline LLC [Member]
OPERATING ACTIVITIES:
Net income (loss)	152	135
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation, depletion, and amortization	92	88
Allowance for equity funds used during construction (equity AFUDC)	(8)	(6)
Cash provided (used) by changes in current assets and liabilities:
Affiliate receivables	(1)	0
Trade and other accounts receivable	(9)	3
Other current assets and deferred charges	3	1
Trade accounts payable	(1)	(6)
Affiliate payables	0	(3)
Other current liabilities	4	9
Other, including changes in noncurrent assets and liabilities	(28)	(40)
Net cash provided (used) by operating activities	204	181
FINANCING ACTIVITIES:
Cash distributions to parent	(118)	(106)
Cash contributions from parent	25	181
Advances from affiliate – net	0	(26)
Net cash provided (used) by financing activities	(93)	49
INVESTING ACTIVITIES:
Capital expenditures (1)	(159)	(149)
Contributions and advances for construction costs	19	6
Dispositions – net	(14)	(17)
Advances to affiliate – net	43	(70)
Net cash provided (used) by investing activities	(111)	(230)
Increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	0	0
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
(1) Increases to property, plant, and equipment, exclusive of equity AFUDC	(200)	(170)
Changes in related accounts payable and accrued liabilities	41	21
Capital expenditures	$ (159)	$ (149)

Revenue Recognition Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Contract With Customer, Liability [Line Items]
Contract with Customer, Liability - Beginning of Period	$ 932	$ 1,054	$ 948	$ 1,046
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	42	32	169	152
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination	49	0	49	23
Other Significant Noncash Transaction, Value of Consideration Received	2	1	5	5
Contract with Customer, Liability, Revenue Recognized	(77)	(83)	(223)	(222)
Contract with Customer, Liability - End of Period	948	1,004	948	1,004
Transcontinental Gas Pipe Line Company, LLC [Member]
Contract With Customer, Liability [Line Items]
Contract with Customer, Liability - Beginning of Period	157	168	163	173
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress	0	0	0	0
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination	0	0	0	0
Other Significant Noncash Transaction, Value of Consideration Received	0	0	0	0
Contract with Customer, Liability, Revenue Recognized	(2)	(3)	(8)	(8)
Contract with Customer, Liability - End of Period	$ 155	$ 165	$ 155	$ 165

Fair Value Measurements - ARO Trust (Details) - Transcontinental Gas Pipe Line Company, LLC [Member] - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	$ 194	$ 223
Debt Securities, Trading, and Equity Securities, FV-NI	320	356
External Trust
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transco's annual funding commitment for ARO	51
Cash management funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	6	34
Debt Securities, Trading, and Equity Securities, FV-NI	6	34
Private Equity Funds, US
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	39	53
Debt Securities, Trading, and Equity Securities, FV-NI	147	169
Private Equity Funds, Non-US
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	32	32
Debt Securities, Trading, and Equity Securities, FV-NI	58	51
Municipal Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI, Cost	117	104
Debt Securities, Trading, and Equity Securities, FV-NI	$ 109	$ 102

Leases (Tables)

9 Months Ended

Sep. 30, 2026

Leases [Abstract]

Operating Lease, Lease Income

Lease income related to power projects was as follows:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Millions)

Lease income — fixed	$	35	$	—	$	35	$	—
Lease income — variable	5		—		5		—
Total operating lease income	$	40	$	—	$	40	$	—

Lessor, Operating Lease, Payment to be Received, Maturity

At September 30, 2026, future lease payments to be received under operating lease terms related to in-service power projects were as follows:


	(Millions)
2026	$	51
2027	205
2028	205
2029	205
2030	205
2031	205
Thereafter	942
Total	$	2,018

Segment Disclosures

9 Months Ended

Sep. 30, 2026

Segment Reporting [Abstract]

Segment Disclosures [Text Block]

Note 11 – Segment Disclosures

Williams

Williams’ four reportable segments are Transmission, Power & Gulf; Northeast G&P; West; and Gas & NGL Marketing Services. See Note 1 – Description of Business and Basis of Presentation.

Performance Measurement

Williams’ CODM is the Chief Executive Officer. Williams’ CODM primarily utilizes Modified EBITDA, its measure of segment profit and loss, to evaluate performance and make decisions on capital allocation and human resources. Such evaluation includes periodic comparisons of actual performance versus historical and budget, as well as projections of Modified EBITDA.

Williams defines Modified EBITDA of reportable segments as follows:

•Income (loss) before income taxes excluding:

◦Contributions from upstream operations, corporate, and other business activities, including the gain on the sale of certain upstream assets;

◦Depreciation, depletion, and amortization expenses;

◦Equity earnings (losses);

◦Other investing income (loss) – net;

◦Interest expense; and

◦Accretion expense associated with AROs for nonregulated operations.

•This measure is further adjusted to include Williams’ proportionate share (based on ownership interest) of Modified EBITDA from its equity-method investments, including its indirect share from interests owned by equity-method investees, calculated consistently with the definition described above.

Significant noncash items which are components of Modified EBITDA may include net unrealized gain (loss) from commodity derivatives within Total revenues, net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses for Williams’ Gas & NGL Marketing Services segment, charges associated with lower of cost or net realizable value adjustments to the Gas & NGL Marketing Services segment inventory within Product sales (for natural gas marketing inventory as these sales are presented net of the related costs) and Product costs (for NGL marketing inventory), and impairments or write-offs of certain assets within Other operating (income) expense – net.

Intersegment Service revenues primarily represent transportation services provided to Williams’ marketing business and gathering services provided to its upstream oil and gas properties. Intersegment Product sales primarily represent the sale of natural gas and NGLs from Williams’ natural gas processing plants and its oil and gas properties to its marketing business.

Segment assets include Investments, Property, plant, and equipment – net, and Intangible assets – net.

The following tables present revenues, Modified EBITDA, significant expenses, and certain segment assets measures:


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)
Three Months Ended September 30, 2026
Segment revenues:
Service revenues
External	$	1,304	$	533	$	471	$	—	$	2,308
Internal	24		3		67		—		94
Total service revenues	1,328		536		538		—		2,402
Total service revenues – commodity consideration	32		—		25		—		57
Product sales
External	43		7		84		664		798
Internal	127		9		212		(107)		241
Total product sales	170		16		296		557		1,039
Net gain (loss) from commodity derivatives
Realized	(4)		—		—		(3)		(7)
Unrealized	—		—		—		32		32
Total net gain (loss) from commodity derivatives (2)	(4)		—		—		29		25
Total revenues of reportable segments	$	1,526	$	552	$	859	$	586	$	3,523
Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(175)		(16)		(285)		(545)

Operating and administrative expenses (3)	(353)		(111)		(215)		(19)
Recoverable power, transportation, and storage costs (4)	(76)		(49)		(18)		—
Other segment income (expenses) - net (5)	40		(3)		(1)		—
Gain on sale of certain assets (Note 3)	—		—		83		—
Proportional Modified EBITDA of equity-method investments	38		169		28		17
Total Modified EBITDA of reportable segments	$	1,000	$	542	$	451	$	39	$	2,032
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									52

Depreciation, depletion, and amortization expenses									(620)
Equity earnings (losses)									157
Other investing income (loss) - net (Note 3)									30
Interest expense									(385)
Accretion expense associated with AROs for nonregulated operations									(26)
Proportional Modified EBITDA of equity-method investments									(252)
Income (loss) before income taxes									$	988

Additions to long-lived segment assets	$	2,139	$	28	$	5,022	$	—	$	7,189


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)

Three Months Ended September 30, 2025
Segment revenues:
Service revenues
External	$	1,213	$	495	$	409	$	—	$	2,117
Internal	24		4		61		—		89
Total service revenues	1,237		499		470		—		2,206
Total service revenues – commodity consideration	24		—		21		—		45
Product sales
External	42		7		38		576		663
Internal	88		24		181		(161)		132
Total product sales	130		31		219		415		795
Net gain (loss) from commodity derivatives
Realized	1		—		2		(11)		(8)
Unrealized	—		—		—		44		44
Total net gain (loss) from commodity derivatives (2)	1		—		2		33		36
Total revenues of reportable segments	$	1,392	$	530	$	712	$	448	$	3,082
Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(139)		(25)		(211)		(398)
Net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses	—		—		—		2
Operating and administrative expenses (3)	(290)		(114)		(150)		(14)
Recoverable power, transportation, and storage costs (4)	(64)		(42)		(17)		—
Other segment income (expenses) - net (5)	37		(5)		(28)		—

Proportional Modified EBITDA of equity-method investments	37		161		36		16
Total Modified EBITDA of reportable segments	$	973	$	505	$	342	$	54	$	1,874
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									93
Depreciation, depletion, and amortization expenses									(564)
Equity earnings (losses)									152
Other investing income (loss) - net									19
Interest expense									(372)
Accretion expense associated with AROs for nonregulated operations									(23)
Proportional Modified EBITDA of equity-method investments									(250)
Income (loss) before income taxes									$	929

Additions to long-lived segment assets	$	754	$	53	$	167	$	—	$	974


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)


Nine Months Ended September 30, 2026
Segment revenues:
Service revenues
External	$	3,780	$	1,559	$	1,319	$	—	$	6,658
Internal	72		10		201		—		283
Total service revenues	3,852		1,569		1,520		—		6,941
Total service revenues – commodity consideration	81		1		66		—		148
Product sales
External	104		29		155		2,282		2,570
Internal	324		43		599		(324)		642
Total product sales	428		72		754		1,958		3,212
Net gain (loss) from commodity derivatives
Realized	(9)		—		(2)		(159)		(170)
Unrealized	—		—		—		(41)		(41)
Total net gain (loss) from commodity derivatives (2)	(9)		—		(2)		(200)		(211)
Total revenues of reportable segments	$	4,352	$	1,642	$	2,338	$	1,758	$	10,090





Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(446)		(73)		(723)		(1,530)
Net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses	—		—		—		1
Operating and administrative expenses (3)	(935)		(323)		(530)		(71)
Recoverable power, transportation, and storage costs (4)	(201)		(146)		(54)		—
Other segment income (expenses) - net (5)	88		1		4		(1)

Gain on sale of certain assets (Note 3)	—		—		83		—
Proportional Modified EBITDA of equity-method investments	111		505		99		45
Total Modified EBITDA of reportable segments	$	2,969	$	1,606	$	1,217	$	202	$	5,994
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									188
Gain on sale of certain upstream assets (Note 3)									194
Depreciation, depletion, and amortization expenses									(1,796)
Equity earnings (losses)									477
Other investing income (loss) - net (Note 3)									188
Interest expense									(1,132)
Accretion expense associated with AROs for nonregulated operations									(73)
Proportional Modified EBITDA of equity-method investments									(760)
Income (loss) before income taxes									$	3,280











Additions to long-lived segment assets	$	5,125	$	71	$	5,130	$	1	$	10,327


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services (1)		Total
	(Millions)

Nine Months Ended September 30, 2025
Segment revenues:
Service revenues
External	$	3,476	$	1,482	$	1,195	$	—	$	6,153
Internal	72		11		159		—		242
Total service revenues	3,548		1,493		1,354		—		6,395
Total service revenues – commodity consideration	75		1		65		—		141
Product sales
External	99		42		109		2,037		2,287
Internal	254		90		584		(480)		448
Total product sales	353		132		693		1,557		2,735
Net gain (loss) from commodity derivatives
Realized	—		—		1		(44)		(43)
Unrealized	—		—		—		35		35
Total net gain (loss) from commodity derivatives (2)	—		—		1		(9)		(8)
Total revenues of reportable segments	$	3,976	$	1,626	$	2,113	$	1,548	$	9,263





Segment costs and expenses and Proportional Modified EBITDA of equity-method investments:
Product costs and net realized processing commodity expenses	(381)		(115)		(666)		(1,332)
Net unrealized gain (loss) from commodity derivatives within Net processing commodity expenses	—		—		—		4
Operating and administrative expenses (3)	(846)		(333)		(452)		(72)
Recoverable power, transportation, and storage costs (4)	(189)		(125)		(46)		—
Other segment income (expenses) - net (5)	52		(7)		(18)		1

Proportional Modified EBITDA of equity-method investments	110		474		106		27
Total Modified EBITDA of reportable segments	$	2,722	$	1,520	$	1,037	$	176	$	5,455
Reconciliation of Modified EBITDA:
Contributions from upstream operations, corporate, and other business activities									286

Depreciation, depletion, and amortization expenses									(1,754)
Equity earnings (losses)									449
Other investing income (loss) - net									31
Interest expense									(1,071)
Accretion expense associated with AROs for nonregulated operations									(71)
Proportional Modified EBITDA of equity-method investments									(717)
Income (loss) before income taxes									$	2,608











Additions to long-lived segment assets	$	1,781	$	166	$	962	$	1	$	2,910

As of September 30, 2026
Equity-method investments by reportable segment	$	575	$	3,168	$	428	$	261	$	4,432
Segment assets	$	30,966	$	12,166	$	18,366	$	276	$	61,774

As of December 31, 2025
Equity-method investments by reportable segment	$	512	$	3,236	$	460	$	292	$	4,500
Segment assets	$	26,515	$	12,533	$	12,398	$	317	$	51,763

_______________________

(1) As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities.

(4) Recoverable power, transportation and storage costs are charges incurred which are reimbursable pursuant to FERC stipulations, customer contracts, or certain power purchase agreements.

Transco

Transco manages and evaluates its business as one single reportable segment. Transco’s CODM is the Senior Vice President, Transmission, Power & Gulf. Transco’s CODM determines resource allocation and evaluates segment operating performance based upon Net income (loss) as reported on the Statement of Net Income.

Significant expenses within net income include Operating and maintenance expenses and General and administrative expenses, which are each separately presented on Transco’s Statement of Net Income. Other segment items within net income include natural gas product costs; depreciation and amortization expenses; taxes, other than income taxes; other operating (income) expense – net; interest expense; interest income; other income (expense) – net; and AFUDC.

Transco’s segment assets include Property, plant, and equipment – net as presented on the Balance Sheet.

NWP

NWP manages and evaluates its business as one single reportable segment. NWP’s CODM is the Senior Vice President, Transmission, Power & Gulf. NWP’s CODM determines resource allocation and evaluates segment operating performance based upon Net income (loss) as reported on the Statement of Net Income.

Significant expenses within net income include Operating and maintenance expenses and General and administrative expenses, which are each separately presented on NWP’s Statement of Net Income. Other segment items within net income include depreciation and amortization expenses; taxes, other than income taxes; other operating (income) expense – net; interest expense; interest income; other income (expense) – net; and AFUDC.

NWP’s segment assets include Property, plant, and equipment – net as presented on the Balance Sheet.

- Definition

The entire disclosure for segment reporting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-34

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26C

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26B

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-15

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 15: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 17: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 18: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 19: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 20: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 21: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 22: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/280/tableOfContent

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26

+ Details

Provision (Benefit) for Income Taxes (Tables)

9 Months Ended

Sep. 30, 2026

Income Tax Expense (Benefit), Continuing Operations [Abstract]

Schedule of Components of Provision (benefit) for income taxes [Table Text Block]

Williams’ Provision (benefit) for income taxes includes:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Millions)
Current:
Federal	$	(3)	$	(8)	$	(6)	$	155
State	—		(2)		15		16

	(3)		(10)		9		171
Deferred:
Federal	190		185		620		337
State	34		71		96		105

	224		256		716		442
Provision (benefit) for income taxes	$	221	$	246	$	725	$	613

Description of Business and Basis of Presentation (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2026	Sep. 30, 2026	Jul. 31, 2026
Noncontrolling Interests
General and Description Of Business [Abstract]
Changes in ownership of consolidated subsidiaries, net (Note 1)		$ 3,140
Capital in excess of par value [Member]
General and Description Of Business [Abstract]
Changes in ownership of consolidated subsidiaries, net (Note 1)		458
Pantheon
General and Description Of Business [Abstract]
Increase (Decrease) in Deferred Income Taxes		$ 144
Williams Companies Inc [Member] \| Pantheon
General and Description Of Business [Abstract]
Subsidiary, Ownership Percentage, Noncontrolling Owner			49.00%
Noncontrolling Interest in Joint Ventures			$ 5,340
Williams Companies Inc [Member] \| Pantheon \| Capital in excess of par value [Member] \| Subsequent Event [Member]
General and Description Of Business [Abstract]
Changes in ownership of consolidated subsidiaries, net (Note 1)	$ 1,000
Transmission, Power & Gulf [Member] \| Gulfstream Natural Gas System, LLC [Member]
General and Description Of Business [Abstract]
Equity Method Investment, Ownership Percentage		50.00%
Transmission, Power & Gulf [Member] \| Williams Companies Inc [Member] \| Pantheon \| Variable Interest Entity, Primary Beneficiary [Member]
General and Description Of Business [Abstract]
Variable Interest Entity Ownership Percentage		51.00%
Northeast G & P [Member] \| Blue Racer Midstream LLC [Member]
General and Description Of Business [Abstract]
Equity Method Investment, Ownership Percentage		50.00%
Northeast G & P [Member] \| Williams Companies Inc [Member] \| Northeast JV [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
General and Description Of Business [Abstract]
Variable Interest Entity Ownership Percentage		65.00%
Northeast G & P [Member] \| Williams Companies Inc [Member] \| Cardinal Gas Services LLC [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
General and Description Of Business [Abstract]
Variable Interest Entity Ownership Percentage		66.00%
West [Member] \| Overland Pass Pipeline Company LLC [Member]
General and Description Of Business [Abstract]
Equity Method Investment, Ownership Percentage		50.00%
West [Member] \| Williams Companies Inc [Member] \| Conway Fractionator [Member]
General and Description Of Business [Abstract]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		50.00%
Gas & NGL Marketing Services \| Cogentrix Co-Investment Fund, LP \| Indirect Ownership Interest
General and Description Of Business [Abstract]
Equity Method Investment, Ownership Percentage		10.00%

Balance Sheet (Unaudited) - NWP - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Assets, Current [Abstract]
Cash and cash equivalents	$ 1,756	$ 63
Inventory, Net	319	314
Other current assets and deferred charges	427	256
Current assets	4,732	3,244
Property, plant, and equipment	73,849	62,010
Accumulated depreciation, depletion, and amortization	(21,318)	(20,014)
Property, plant, and equipment – net	52,531	41,996
Other Assets, Noncurrent	1,938	2,011
Total assets	70,680	58,573
Liabilities, Current [Abstract]
Accounts payable	2,441	2,224
Other current liabilities	1,545	1,639
Total current liabilities	6,323	6,106
Contingent liabilities and commitments
Members' Equity [Abstract]
Retained Earnings (Accumulated Deficit)	(11,794)	(12,237)
Total liabilities and equity	70,680	58,573
Northwest Pipeline LLC [Member]
Assets, Current [Abstract]
Cash and cash equivalents	0	0
Other Receivables, Net, Current	13	1
Inventory, Net	10	9
Regulatory Assets, Current	5	3
Other current assets and deferred charges	6	8
Current assets	248	280
Property, plant, and equipment	4,660	4,434
Accumulated depreciation, depletion, and amortization	(2,269)	(2,164)
Property, plant, and equipment – net	2,391	2,270
Regulatory Assets, Noncurrent	94	80
Other Assets, Noncurrent	33	30
Total assets	2,766	2,660
Liabilities, Current [Abstract]
Regulatory Liability, Current	20	20
Other current liabilities	61	32
Long-Term Debt, Current Maturities	499	0
Total current liabilities	668	103
Long-Term Debt, Excluding Current Maturities	250	748
Regulatory Liabilities, Noncurrent	196	225
Asset Retirement Obligations, Noncurrent	158	152
Other Liabilities, Noncurrent	10	5
Contingent liabilities and commitments
Members' Equity [Abstract]
Members' Capital	1,328	1,305
Retained Earnings (Accumulated Deficit)	156	122
Total Members' Equity	1,484	1,427
Total liabilities and equity	2,766	2,660
Northwest Pipeline LLC [Member] \| Related Party
Assets, Current [Abstract]
Accounts and Financing Receivable, after Allowance for Credit Loss, Current	175	218
Accounts Receivable, after Allowance for Credit Loss, Current	1	0
Liabilities, Current [Abstract]
Accounts payable	14	12
Northwest Pipeline LLC [Member] \| Nonrelated Party
Assets, Current [Abstract]
Accounts Receivable, after Allowance for Credit Loss, Current	38	41
Liabilities, Current [Abstract]
Accounts Payable, Trade, Current	$ 74	$ 39

Leases - Lessor (Details) - Electric Generation Equipment - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Lessor, Operating Lease, Description [Abstract]
Lessor, Operating Lease, Term of Contract	10 years		10 years
Lessor, Operating Lease, Option to Extend	five years
Operating Lease, Lease Income, Lease Payments	$ 35	$ 0	$ 35	$ 0
Variable Lease, Income	5	0	5	0
Operating Lease, Lease Income	40	$ 0	40	$ 0
Property, Plant, and Equipment, Lessor Asset under Operating Lease, before Accumulated Depreciation	1,000		1,000
Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Abstract]
Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year	51		51
Lessor, Operating Lease, Payment to be Received, Year One	205		205
Lessor, Operating Lease, Payment to be Received, Year Two	205		205
Lessor, Operating Lease, Payment to be Received, Year Three	205		205
Lessor, Operating Lease, Payment to be Received, Year Four	205		205
Lessor, Operating Lease, Payment to be Received, Year Five	205		205
Lessor, Operating Lease, Payment to be Received, after Year Five	942		942
Lessor, Operating Lease, Payment to be Received	$ 2,018		$ 2,018

Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2026

Revenue Recognition [Abstract]

Disaggregation of Revenue [Table Text Block]

The following tables present Williams’ revenue disaggregated by major service line:


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services		Other		Eliminations		Total
	(Millions)
Three Months Ended September 30, 2026
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	977	$	—	$	—	$	—	$	—	$	(21)	$	956
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	272		498		533		—		—		(69)		1,234
Commodity consideration	32		—		25		—		—		—		57
Other	33		24		4		—		—		(2)		59
Total service revenues	1,314		522		562		—		—		(92)		2,306
Product sales	170		16		296		1,540		141		(467)		1,696
Total revenues from contracts with customers	1,484		538		858		1,540		141		(559)		4,002
Other revenues (1)	42		14		1		380		(10)		(4)		423
Other adjustments (2)	—		—		—		(1,334)		—		132		(1,202)
Total revenues	$	1,526	$	552	$	859	$	586	$	131	$	(431)	$	3,223

Three Months Ended September 30, 2025
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	973	$	—	$	—	$	—	$	—	$	(21)	$	952
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	247		463		464		—		—		(64)		1,110
Commodity consideration	24		—		21		—		—		—		45
Other	10		25		5		—		—		(4)		36
Total service revenues	1,254		488		490		—		—		(89)		2,143
Product sales	130		31		219		1,248		136		(416)		1,348
Total revenues from contracts with customers	1,384		519		709		1,248		136		(505)		3,491
Other revenues (1)	8		11		3		658		24		—		704
Other adjustments (2)	—		—		—		(1,458)		—		186		(1,272)
Total revenues	$	1,392	$	530	$	712	$	448	$	160	$	(319)	$	2,923


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services		Other		Eliminations		Total
	(Millions)
Nine Months Ended September 30, 2026
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	2,917	$	—	$	—	$	—	$	—	$	(60)	$	2,857
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	777		1,456		1,501		—		—		(204)		3,530
Commodity consideration	81		1		66		—		—		—		148
Other	80		74		17		—		—		(15)		156
Total service revenues	3,855		1,531		1,584		—		—		(279)		6,691
Product sales	428		72		754		5,013		422		(1,281)		5,408
Total revenues from contracts with customers	4,283		1,603		2,338		5,013		422		(1,560)		12,099
Other revenues (1)	69		39		—		2,113		(31)		(6)		2,184
Other adjustments (2)	—		—		—		(5,368)		—		391		(4,977)
Total revenues	$	4,352	$	1,642	$	2,338	$	1,758	$	391	$	(1,175)	$	9,306

Nine Months Ended September 30, 2025
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	2,820	$	—	$	—	$	—	$	—	$	(62)	$	2,758
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	665		1,385		1,335		—		—		(164)		3,221
Commodity consideration	75		1		65		—		—		—		141
Other	40		74		17		—		—		(14)		117
Total service revenues	3,600		1,460		1,417		—		—		(240)		6,237
Product sales	353		132		693		4,517		428		(1,304)		4,819
Total revenues from contracts with customers	3,953		1,592		2,110		4,517		428		(1,544)		11,056
Other revenues (1)	23		34		3		2,354		50		(2)		2,462
Other adjustments (2)	—		—		—		(5,323)		—		557		(4,766)
Total revenues	$	3,976	$	1,626	$	2,113	$	1,548	$	478	$	(989)	$	8,752

______________

(1)Revenues not derived from contracts with customers primarily consist of physical product sales related to commodity derivative contracts, realized and unrealized gains and losses associated with Williams’ commodity derivative contracts, which are reported in Net gain (loss) from commodity derivatives in the Consolidated Statement of Comprehensive Income, management fees received for certain services provided to operated equity-method investments, and lease revenues from Williams’ Socrates power generation facility (see Note 7 – Leases) and certain corporate office properties.

(2)Other adjustments reflect certain costs of Gas & NGL Marketing Services’ risk management activities. As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities in the Consolidated Statement of Comprehensive Income.

Contract with Customer, Asset and Liability [Table Text Block]

The following tables present a reconciliation of contract assets:


	Three Months Ended September 30,
	Williams				Transco				NWP
	2026		2025		2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	113	$	102	$	12	$	13	$	24	$	23
Revenue recognized in excess of amounts invoiced	24		13		—		—		—		2
Minimum volume commitments invoiced	(7)		(5)		—		—		—		—

Amortization of contract assets	(25)		(2)		—		—		(1)		(1)
Balance at end of period	$	105	$	108	$	12	$	13	$	23	$	24

	Nine Months Ended September 30,
	Williams				Transco				NWP
	2026		2025		2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	109	$	98	$	13	$	10	$	24	$	21
Revenue recognized in excess of amounts invoiced	61		71		—		4		—		5

Minimum volume commitments invoiced	(17)		(58)		—		—		—		—
Amortization of contract assets	(48)		(3)		(1)		(1)		(1)		(2)
Balance at end of period	$	105	$	108	$	12	$	13	$	23	$	24

Contract Liabilities

The following tables present a reconciliation of contract liabilities:


	Three Months Ended September 30,
	Williams				Transco
	2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	932	$	1,054	$	157	$	168
Payments received and deferred	42		32		—		—
Liabilities acquired and other additions	49		—		—		—
Significant financing component	2		1		—		—

Recognized in revenue	(77)		(83)		(2)		(3)
Balance at end of period	$	948	$	1,004	$	155	$	165

	Nine Months Ended September 30,
	Williams				Transco
	2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	948	$	1,046	$	163	$	173
Payments received and deferred	169		152		—		—
Liabilities acquired and other additions	49		23		—		—
Significant financing component	5		5		—		—

Recognized in revenue	(223)		(222)		(8)		(8)
Balance at end of period	$	948	$	1,004	$	155	$	165

The following table presents the amount of the contract liabilities balance expected to be recognized as revenue when performance obligations are satisfied as of September 30, 2026:


	Contract Liabilities
	Williams		Transco
	(Millions)
2026 (three months)	$	57	$	3
2027 (one year)	174		11
2028 (one year)	138		11
2029 (one year)	110		10
2030 (one year)	75		10
Thereafter	394		110
Total	$	948	$	155

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

The following table presents the transaction price allocated to the remaining performance obligations under certain contracts as of September 30, 2026:


	Remaining Performance Obligations
	Williams		Transco		NWP
	(Millions)
2026 (three months)	$	1,202	$	761	$	105
2027 (one year)	4,720		2,934		419
2028 (one year)	4,239		2,655		399
2029 (one year)	3,773		2,370		373
2030 (one year)	3,034		1,843		367
Thereafter	15,573		10,467		2,345
Total	$	32,541	$	21,030	$	4,008

Contract With Customer Accounts Receivable [Table Text Block]

The following is a summary of Williams’ Trade accounts and other receivables:


	September 30, 2026		December 31, 2025
	(Millions)
Accounts receivable related to revenues from contracts with customers	$	1,697	$	1,532
Receivables from derivatives	133		444
Other accounts receivable	268		108
Trade accounts and other receivables	$	2,098	$	2,084

Statement of Net Income (Unaudited) - NWP - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Revenues [Abstract]
Revenues	$ 3,223	$ 2,923	$ 9,306	$ 8,752
Costs and Expenses [Abstract]
Operating and maintenance expenses	639	583	1,801	1,697
Depreciation, depletion, and amortization expenses	620	564	1,796	1,754
General and Administrative Expense	275	168	648	530
Other operating (income) expense – net	4	14	(6)	17
Total costs and expenses	2,087	1,814	5,667	5,604
Operating income (loss)	1,136	1,109	3,639	3,148
Interest expense	(385)	(372)	(1,132)	(1,071)
Other income (expense) – net	50	21	108	51
Net income (loss)	988	929	3,280	2,608
Northwest Pipeline LLC [Member]
Revenues [Abstract]
Revenues	119	114	357	338
Costs and Expenses [Abstract]
Depreciation, depletion, and amortization expenses	31	29	92	88
Taxes, other than income taxes	3	3	11	11
Other operating (income) expense – net	(6)	(6)	(16)	(16)
Total costs and expenses	67	67	203	193
Operating income (loss)	52	47	154	145
Interest expense	(8)	(7)	(25)	(21)
Allowance for equity and borrowed funds used during construction (AFUDC)	4	3	10	7
Other income (expense) – net	2	(1)	3	0
Net income (loss)	53	44	152	135
Northwest Pipeline LLC [Member] \| Affiliates
Costs and Expenses [Abstract]
Operating and maintenance expenses	15	13	43	38
General and Administrative Expense	11	10	31	30
Interest Income, Other	2	1	6	2
Northwest Pipeline LLC [Member] \| Third-party
Costs and Expenses [Abstract]
Operating and maintenance expenses	11	15	35	35
General and Administrative Expense	2	3	7	7
Interest Income, Other	1	1	4	2
Northwest Pipeline LLC [Member] \| Natural gas transportation service
Revenues [Abstract]
Revenues	114	108	340	320
Northwest Pipeline LLC [Member] \| Natural gas storage service
Revenues [Abstract]
Revenues	4	3	11	11
Northwest Pipeline LLC [Member] \| Other service
Revenues [Abstract]
Revenues	$ 1	$ 3	$ 6	$ 7

Balance Sheet (Unaudited) - Transco - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Assets, Current [Abstract]
Cash and cash equivalents	$ 1,756	$ 63
Inventory, Net	319	314
Other current assets and deferred charges	427	256
Current assets	4,732	3,244
Property, plant, and equipment	73,849	62,010
Accumulated depreciation, depletion, and amortization	(21,318)	(20,014)
Property, plant, and equipment – net	52,531	41,996
Other Assets, Noncurrent	1,938	2,011
Total assets	70,680	58,573
Liabilities, Current [Abstract]
Accounts payable	2,441	2,224
Other current liabilities	1,545	1,639
Total current liabilities	6,323	6,106
Contingent liabilities and commitments
Members' Equity [Abstract]
Retained Earnings (Accumulated Deficit)	(11,794)	(12,237)
Total liabilities and equity	70,680	58,573
Transcontinental Gas Pipe Line Company, LLC [Member]
Assets, Current [Abstract]
Cash and cash equivalents	0	0
Other Receivables, Net, Current	26	23
Inventory, Net	92	82
Regulatory Assets, Current	146	126
Other current assets and deferred charges	39	24
Current assets	1,102	1,522
Property, plant, and equipment	22,011	21,012
Accumulated depreciation, depletion, and amortization	(6,669)	(6,404)
Property, plant, and equipment – net	15,342	14,608
Regulatory Assets, Noncurrent	242	268
Other Assets, Noncurrent	470	466
Total assets	17,156	16,864
Liabilities, Current [Abstract]
Regulatory Liability, Current	61	93
Interest Payable, Current	40	53
Customer Refund Liability, Current	0	179
Accrued Liabilities and Other Liabilities	0	75
Other current liabilities	209	143
Asset Retirement Obligation, Current	24	41
Long-Term Debt, Current Maturities	243	246
Total current liabilities	1,010	1,117
Long-Term Debt, Excluding Current Maturities	5,631	5,642
Regulatory Liabilities, Noncurrent	909	914
Asset Retirement Obligations, Noncurrent	568	573
Other Liabilities, Noncurrent	284	227
Contingent liabilities and commitments
Members' Equity [Abstract]
Members' Capital	5,363	5,088
Retained Earnings (Accumulated Deficit)	3,391	3,303
Total Members' Equity	8,754	8,391
Total liabilities and equity	17,156	16,864
Transcontinental Gas Pipe Line Company, LLC [Member] \| Related Party
Assets, Current [Abstract]
Accounts and Financing Receivable, after Allowance for Credit Loss, Current	526	954
Accounts Receivable, after Allowance for Credit Loss, Current	10	7
Liabilities, Current [Abstract]
Accounts payable	61	62
Transcontinental Gas Pipe Line Company, LLC [Member] \| Nonrelated Party
Assets, Current [Abstract]
Accounts Receivable, after Allowance for Credit Loss, Current	263	306
Liabilities, Current [Abstract]
Accounts Payable, Trade, Current	$ 372	$ 225

Consolidated Statement of Changes in Equity (Unaudited) - Williams - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Capital in Excess of Par Value	Retained Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total Stockholders' Equity	Noncontrolling Interests
Beginning balance at Dec. 31, 2024	$ 14,840	$ 35	$ 1,258	$ 24,643	$ (12,396)	$ 76	$ (1,180)	$ 12,436	$ 2,404
Statement [Line Items]
Net income (loss)	1,995	0	0	0	1,884	0	0	1,884	111
Other comprehensive income (loss)	(3)	0	0	0	0	(3)	0	(3)	0
Dividends, Common Stock, Cash	(1,832)	0	0	0	(1,832)	0	0	(1,832)	0
Stock-based compensation and related common stock issuances, net of tax	16	0	3	13	0	0	0	16	0
Dividends and distributions to noncontrolling interests	(197)	0	0	0	0	0	0	0	(197)
Contributions from noncontrolling interests	22	0	0	0	0	0	0	0	22
Other	19	0	0	0	(10)	29	0	19	0
Net increase (decrease) in equity	20	0	3	13	42	26	0	84	(64)
Ending balance at Sep. 30, 2025	14,860	35	1,261	24,656	(12,354)	102	(1,180)	12,520	2,340
Beginning balance at Jun. 30, 2025	14,805	35	1,260	24,633	(12,387)	77	(1,180)	12,438	2,367
Statement [Line Items]
Net income (loss)	683	0	0	0	647	0	0	647	36
Other comprehensive income (loss)	(4)	0	0	0	0	(4)	0	(4)	0
Dividends, Common Stock, Cash	(611)	0	0	0	(611)	0	0	(611)	0
Stock-based compensation and related common stock issuances, net of tax	24	0	1	23	0	0	0	24	0
Dividends and distributions to noncontrolling interests	(66)	0	0	0	0	0	0	0	(66)
Contributions from noncontrolling interests	3	0	0	0	0	0	0	0	3
Other	26	0	0	0	(3)	29	0	26	0
Net increase (decrease) in equity	55	0	1	23	33	25	0	82	(27)
Ending balance at Sep. 30, 2025	14,860	35	1,261	24,656	(12,354)	102	(1,180)	12,520	2,340
Beginning balance at Dec. 31, 2025	14,995	35	1,261	24,801	(12,237)	127	(1,180)	12,807	2,188
Statement [Line Items]
Net income (loss)	2,555	0	0	0	2,392	0	0	2,392	163
Other comprehensive income (loss)	(2)	0	0	0	0	(2)	0	(2)	0
Dividends, Common Stock, Cash	(1,940)	0	0	0	(1,940)	0	0	(1,940)	0
Stock-based compensation and related common stock issuances, net of tax	7	0	2	5	0	0	0	7	0
Issuance of common stock as noncash acquisition consideration (Note 3)	2,020	0	27	1,993	0	0	0	2,020	0
Noncontrolling interest resulting from acquisition (Note 3)	450	0	0	0	0	0	0	0	450
Dividends and distributions to noncontrolling interests	(215)	0	0	0	0	0	0	0	(215)
Sale of partial interest in consolidated subsidiary (Note 1)	3,593	0	0	458	0	0	0	458	3,135
Contributions from noncontrolling interests	38	0	0	0	0	0	0	0	38
Other	(7)	0	0	0	(9)	0	0	(9)	2
Net increase (decrease) in equity	6,499	0	29	2,456	443	(2)	0	2,926	3,573
Ending balance at Sep. 30, 2026	21,494	35	1,290	27,257	(11,794)	125	(1,180)	15,733	5,761
Beginning balance at Jun. 30, 2026	15,368	35	1,262	24,783	(11,834)	124	(1,180)	13,190	2,178
Statement [Line Items]
Net income (loss)	767	0	0	0	700	0	0	700	67
Other comprehensive income (loss)	1	0	0	0	0	1	0	1	0
Dividends, Common Stock, Cash	(656)	0	0	0	(656)	0	0	(656)	0
Stock-based compensation and related common stock issuances, net of tax	24	0	1	23	0	0	0	24	0
Issuance of common stock as noncash acquisition consideration (Note 3)	2,020	0	27	1,993	0	0	0	2,020	0
Noncontrolling interest resulting from acquisition (Note 3)	450	0	0	0	0	0	0	0	450
Dividends and distributions to noncontrolling interests	(75)	0	0	0	0	0	0	0	(75)
Sale of partial interest in consolidated subsidiary (Note 1)	3,593	0	0	458	0	0	0	458	3,135
Contributions from noncontrolling interests	6	0	0	0	0	0	0	0	6
Other	(4)	0	0	0	(4)	0	0	(4)	0
Net increase (decrease) in equity	6,126	0	28	2,474	40	1	0	2,543	3,583
Ending balance at Sep. 30, 2026	$ 21,494	$ 35	$ 1,290	$ 27,257	$ (11,794)	$ 125	$ (1,180)	$ 15,733	$ 5,761

Description of Business and Basis of Presentation	9 Months Ended
Description of Business and Basis of Presentation	Sep. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation [Text Block]	Note 1 – Description of Business and Basis of Presentation Description of Business Williams Williams is a Delaware corporation whose common stock is listed and traded on the New York Stock Exchange. Its operations are located in the United States and are presented within the following reportable segments: Transmission, Power & Gulf; Northeast G&P; West; and Gas & NGL Marketing Services, consistent with the manner in which Williams’ Chief Executive Officer, the chief operating decision maker (CODM), evaluates performance and allocates resources. Transmission, Power & Gulf is comprised of interstate natural gas pipelines and their related natural gas storage facilities, including Transco, NWP, MountainWest Pipelines Holding LLC (MountainWest), and a 50 percent equity-method investment in Gulfstream Natural Gas System, L.L.C. (Gulfstream); natural gas gathering and processing (G&P) and crude oil production handling and transportation assets in the Gulf Coast region; and natural gas storage facilities and pipelines providing services in north Texas, Louisiana, and Mississippi. Transmission, Power & Gulf also includes a 51 percent ownership interest in Pantheon Power LLC (Pantheon) (a consolidated variable interest entity, or VIE), which owns the Socrates South power generation facility that was placed in service in the third quarter of 2026 (see Note 7 – Leases) and additional power projects under development. Northeast G&P is comprised of Williams’ midstream gathering, processing, and fractionation businesses in the Marcellus Shale region primarily in Pennsylvania and New York, and the Utica Shale region of eastern Ohio, as well as a 65 percent interest in Ohio Valley Midstream LLC (Northeast JV) (a consolidated VIE) which operates in West Virginia, Ohio, and Pennsylvania, a 66 percent interest in Cardinal Gas Services, L.L.C. (Cardinal) (a consolidated VIE) which operates in Ohio, a 50 percent equity-method investment in Blue Racer Midstream LLC (Blue Racer), and Appalachia Midstream Investments. West is comprised of Williams’ gas gathering, processing, and treating operations in the Denver-Julesberg Basin (DJ Basin) and Piceance regions of Colorado, the southwest and Wamsutter regions of Wyoming, the Barnett Shale region of north-central Texas, the Eagle Ford Shale region of south Texas, and the Haynesville Shale region of east Texas and northwest Louisiana. The Haynesville Shale region also includes gathering, processing, and transportation assets related to the September 2026 Momentum Acquisition (see Note 3 – Acquisitions and Divestitures). In the first quarter of 2026, the Anadarko basin gathering assets in the Mid-Continent region were sold (see Note 3 – Acquisitions and Divestitures). This segment also includes Williams’ NGL storage facilities, an undivided 50 percent interest in a NGL fractionator near Conway, Kansas, and a 50 percent equity-method investment in Overland Pass Pipeline Company LLC (OPPL). Gas & NGL Marketing Services is comprised of Williams’ NGL and natural gas marketing and trading operations, which include risk management and transactions related to the storage and transportation of natural gas and NGLs on strategically positioned assets, as well as an equity-method investment in Cogentrix Co-Investment Fund, LP (Cogentrix) (a nonconsolidated VIE), representing an approximate 10 percent indirect interest in 10 natural gas power plants. Transco Transco is an interstate natural gas transmission company that owns and operates an interstate natural gas pipeline system extending from Texas, Louisiana, Mississippi and the Gulf of America through Alabama, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, Pennsylvania, and New Jersey to the New York City metropolitan area. The system serves customers in Texas and the 12 southeast and Atlantic seaboard states mentioned above, including major metropolitan areas in Georgia, Washington D.C., Maryland, North Carolina, New York, New Jersey, and Pennsylvania. Transco is a single-member limited liability company, and as such, single-member losses are limited to the amount of its investment. NWP NWP owns and operates an interstate pipeline system for the mainline transmission of natural gas. This system extends from the San Juan Basin in northwestern New Mexico and southwestern Colorado through Colorado, Utah, Wyoming, Idaho, Oregon, and Washington to a point on the Canadian border near Sumas, Washington. NWP is a single-member limited liability company, and as such, single-member losses are limited to the amount of its investment. Sale of Partial Interest in Pantheon In July 2026, Williams sold a 49 percent noncontrolling interest in Pantheon, which owns five power projects, to an investor in exchange for $5.34 billion of committed capital, with the change in ownership accounted for as an equity transaction since Williams retains control of Pantheon. The initial July 2026 contribution increased Noncontrolling interests in consolidated subsidiaries by $3.14 billion, Capital in excess of par value by $458 million, and Deferred income tax liabilities by $144 million. The remaining committed capital is expected to be received through the first quarter of 2027, including $1 billion received in October 2026. These capital contributions are dedicated for funding the construction of the power projects. In addition, Williams has a buyout right during years 7 through 14 for an amount that would provide the investor with a specified return (see Note 2 – Variable Interest Entities). Basis of Presentation The accompanying interim financial statements do not include all the notes in the annual financial statements and, therefore, should be read in conjunction with the financial statements and combined notes thereto for the year ended December 31, 2025, in the Annual Report on Form 10-K. The accompanying unaudited financial statements include all normal recurring adjustments and others that, in the opinion of management, are necessary to present fairly the interim financial statements. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying combined notes. Actual results could differ from those estimates. Significant Risks and Uncertainties Management believes that the carrying value of certain of Williams’ property, plant, and equipment and intangible assets, notably certain assets acquired by Williams accounted for as business combinations between 2012 and 2014, may be in excess of current fair value. However, the carrying value of these assets, in management’s judgment, continues to be recoverable. It is reasonably possible that future strategic decisions, including transactions such as monetizing assets or contributing assets to new ventures with third parties, as well as unfavorable changes in expected producer activities, could impact management’s assumptions and ultimately result in impairments of these assets. Such transactions or developments may also indicate that certain Williams’ equity-method investments have experienced other-than-temporary declines in value, which could result in impairment. Accounting Standards Issued But Not Yet Adopted In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures, which requires public entities to disclose additional information in the notes to financial statements for certain types of expenses (including purchases of inventory, employee compensation, depreciation, amortization, and depletion) in commonly presented expense captions (such as cost of sales or general and administrative expenses). The amendments are effective for fiscal years beginning after December 15, 2026, and interim periods within those fiscal years beginning after December 15, 2027, with early adoption permitted. The impact of this standard is currently being evaluated. In May 2026, the FASB issued ASU 2026-02, Environmental Credits and Environmental Credit Obligations, which establishes guidance for the recognition, measurement, presentation, and disclosure of environmental credits and related obligations. The amendments are effective for fiscal years beginning after December 15, 2027, and interim periods within those fiscal years, with early adoption permitted. The impact of this standard is currently being evaluated and is expected to primarily relate to NWP's compliance with the Washington State Climate Commitment Act.

Provision (Benefit) for Income Taxes Tax Provison (Benefit) Table (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Current :
Federal	$ (3)	$ (8)	$ (6)	$ 155
State	0	(2)	15	16
Total	(3)	(10)	9	171
Deferred:
Federal	190	185	620	337
State	34	71	96	105
Total	224	256	716	442
Less: Provision (benefit) for income taxes	$ 221	$ 246	$ 725	$ 613

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483475/205-20-45-3A

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-4

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-21

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-14

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.7)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-10

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Subparagraph (a)
-SubTopic 20
-Topic 740
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482659/740-20-45-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-SubTopic 10
-Topic 235
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

+ Details

Revenue by Category (Details) - USD ($)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2026

Sep. 30, 2025

Sep. 30, 2026

Sep. 30, 2025

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

$ 4,002

$ 3,491

$ 12,099

$ 11,056

Revenue Not from Contract with Customer, Other

^[1]

423

704

2,184

2,462

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

(1,202)

(1,272)

(4,977)

(4,766)

Total revenues

3,223

2,923

9,306

8,752

Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

956

952

2,857

2,758

NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

1,234

1,110

3,530

3,221

NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

148

141

Total revenues

148

141

Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

156

117

Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

2,306

2,143

6,691

6,237

Total revenues

2,319

2,121

6,677

6,165

Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

1,696

1,348

5,408

4,819

Total revenues

845

701

2,744

2,416

Operating Segments [Member] | Transmission, Power & Gulf [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

1,484

1,384

4,283

3,953

Revenue Not from Contract with Customer, Other

^[1]

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

Total revenues

1,526

1,392

4,352

3,976

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

977

973

2,917

2,820

Operating Segments [Member] | Transmission, Power & Gulf [Member] | NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

272

247

777

665

Operating Segments [Member] | Transmission, Power & Gulf [Member] | NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Total revenues

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

1,314

1,254

3,855

3,600

Total revenues

1,328

1,237

3,852

3,548

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

170

130

428

353

Total revenues

170

130

428

353

Operating Segments [Member] | Northeast G & P [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

538

519

1,603

1,592

Revenue Not from Contract with Customer, Other

^[1]

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

Total revenues

552

530

1,642

1,626

Operating Segments [Member] | Northeast G & P [Member] | Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | Northeast G & P [Member] | NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

498

463

1,456

1,385

Operating Segments [Member] | Northeast G & P [Member] | NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Total revenues

Operating Segments [Member] | Northeast G & P [Member] | Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | Northeast G & P [Member] | Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

522

488

1,531

1,460

Total revenues

536

499

1,569

1,493

Operating Segments [Member] | Northeast G & P [Member] | Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

132

Total revenues

132

Operating Segments [Member] | West [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

858

709

2,338

2,110

Revenue Not from Contract with Customer, Other

^[1]

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

Total revenues

859

712

2,338

2,113

Operating Segments [Member] | West [Member] | Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | West [Member] | NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

533

464

1,501

1,335

Operating Segments [Member] | West [Member] | NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Total revenues

Operating Segments [Member] | West [Member] | Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | West [Member] | Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

562

490

1,584

1,417

Total revenues

538

470

1,520

1,354

Operating Segments [Member] | West [Member] | Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

296

219

754

693

Total revenues

296

219

754

693

Operating Segments [Member] | Gas & NGL Marketing Services

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

1,540

1,248

5,013

4,517

Revenue Not from Contract with Customer, Other

^[1]

380

658

2,113

2,354

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

(1,334)

(1,458)

(5,368)

(5,323)

Total revenues

^[3]

586

448

1,758

1,548

Operating Segments [Member] | Gas & NGL Marketing Services | Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | Gas & NGL Marketing Services | NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | Gas & NGL Marketing Services | NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Total revenues

^[3]

Operating Segments [Member] | Gas & NGL Marketing Services | Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Total revenues

^[3]

Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

1,540

1,248

5,013

4,517

Total revenues

^[3]

557

415

1,958

1,557

Corporate, Non-Segment | Other Operating Segment

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

141

136

422

428

Revenue Not from Contract with Customer, Other

^[1]

(10)

(31)

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

Total revenues

131

160

391

478

Corporate, Non-Segment | Other Operating Segment | Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Corporate, Non-Segment | Other Operating Segment | NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Corporate, Non-Segment | Other Operating Segment | NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Corporate, Non-Segment | Other Operating Segment | Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Corporate, Non-Segment | Other Operating Segment | Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Corporate, Non-Segment | Other Operating Segment | Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

141

136

422

428

Intersegment Eliminations [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

(559)

(505)

(1,560)

(1,544)

Revenue Not from Contract with Customer, Other

^[1]

(4)

(6)

(2)

Revenues Adjustments For Certain Risk Management Activities Costs

^[2]

132

186

391

557

Total revenues

(431)

(319)

(1,175)

(989)

Intersegment Eliminations [Member] | Regulated Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

(21)

(60)

(62)

Intersegment Eliminations [Member] | NonRegulated Service Monetary Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

(69)

(64)

(204)

(164)

Intersegment Eliminations [Member] | NonRegulated Service Commodity Consideration [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

Intersegment Eliminations [Member] | Other Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

(2)

(4)

(15)

(14)

Intersegment Eliminations [Member] | Service [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

(92)

(89)

(279)

(240)

Intersegment Eliminations [Member] | Product [Member]

Disaggregation of Revenue [Line Items]

Revenue from Contract with Customer, Excluding Assessed Tax

$ (467)

$ (416)

$ (1,281)

$ (1,304)

[1]	Revenues not derived from contracts with customers primarily consist of physical product sales related to commodity derivative contracts, realized and unrealized gains and losses associated with Williams’ commodity derivative contracts, which are reported in Net gain (loss) from commodity derivatives in the Consolidated Statement of Comprehensive Income, management fees received for certain services provided to operated equity-method investments, and lease revenues from Williams’ Socrates power generation facility (see Note 7 – Leases) and certain corporate office properties.
[2]	Other adjustments reflect certain costs of Gas & NGL Marketing Services’ risk management activities. As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities in the Consolidated Statement of Comprehensive Income.
[3]	As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities.

Revenue Recognition

9 Months Ended

Sep. 30, 2026

Revenue Recognition [Abstract]

Revenue Recognition [Text Block]

Note 4 – Revenue Recognition

Revenue by Category

The following tables present Williams’ revenue disaggregated by major service line:


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services		Other		Eliminations		Total
	(Millions)
Three Months Ended September 30, 2026
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	977	$	—	$	—	$	—	$	—	$	(21)	$	956
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	272		498		533		—		—		(69)		1,234
Commodity consideration	32		—		25		—		—		—		57
Other	33		24		4		—		—		(2)		59
Total service revenues	1,314		522		562		—		—		(92)		2,306
Product sales	170		16		296		1,540		141		(467)		1,696
Total revenues from contracts with customers	1,484		538		858		1,540		141		(559)		4,002
Other revenues (1)	42		14		1		380		(10)		(4)		423
Other adjustments (2)	—		—		—		(1,334)		—		132		(1,202)
Total revenues	$	1,526	$	552	$	859	$	586	$	131	$	(431)	$	3,223

Three Months Ended September 30, 2025
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	973	$	—	$	—	$	—	$	—	$	(21)	$	952
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	247		463		464		—		—		(64)		1,110
Commodity consideration	24		—		21		—		—		—		45
Other	10		25		5		—		—		(4)		36
Total service revenues	1,254		488		490		—		—		(89)		2,143
Product sales	130		31		219		1,248		136		(416)		1,348
Total revenues from contracts with customers	1,384		519		709		1,248		136		(505)		3,491
Other revenues (1)	8		11		3		658		24		—		704
Other adjustments (2)	—		—		—		(1,458)		—		186		(1,272)
Total revenues	$	1,392	$	530	$	712	$	448	$	160	$	(319)	$	2,923


	Transmission, Power & Gulf		Northeast G&P		West		Gas & NGL Marketing Services		Other		Eliminations		Total
	(Millions)
Nine Months Ended September 30, 2026
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	2,917	$	—	$	—	$	—	$	—	$	(60)	$	2,857
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	777		1,456		1,501		—		—		(204)		3,530
Commodity consideration	81		1		66		—		—		—		148
Other	80		74		17		—		—		(15)		156
Total service revenues	3,855		1,531		1,584		—		—		(279)		6,691
Product sales	428		72		754		5,013		422		(1,281)		5,408
Total revenues from contracts with customers	4,283		1,603		2,338		5,013		422		(1,560)		12,099
Other revenues (1)	69		39		—		2,113		(31)		(6)		2,184
Other adjustments (2)	—		—		—		(5,368)		—		391		(4,977)
Total revenues	$	4,352	$	1,642	$	2,338	$	1,758	$	391	$	(1,175)	$	9,306

Nine Months Ended September 30, 2025
Revenues from contracts with customers:
Service revenues:
Regulated interstate natural gas transportation and storage	$	2,820	$	—	$	—	$	—	$	—	$	(62)	$	2,758
Gathering, processing, transportation, fractionation, and storage:
Monetary consideration	665		1,385		1,335		—		—		(164)		3,221
Commodity consideration	75		1		65		—		—		—		141
Other	40		74		17		—		—		(14)		117
Total service revenues	3,600		1,460		1,417		—		—		(240)		6,237
Product sales	353		132		693		4,517		428		(1,304)		4,819
Total revenues from contracts with customers	3,953		1,592		2,110		4,517		428		(1,544)		11,056
Other revenues (1)	23		34		3		2,354		50		(2)		2,462
Other adjustments (2)	—		—		—		(5,323)		—		557		(4,766)
Total revenues	$	3,976	$	1,626	$	2,113	$	1,548	$	478	$	(989)	$	8,752

______________

For Transco and NWP, revenue disaggregation by major service line includes Natural gas transportation service revenues, Natural gas storage service revenues, Natural gas product sales, and Other service revenues, which are separately presented in their Statements of Net Income.

Contract Assets

The following tables present a reconciliation of contract assets:


	Three Months Ended September 30,
	Williams				Transco				NWP
	2026		2025		2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	113	$	102	$	12	$	13	$	24	$	23
Revenue recognized in excess of amounts invoiced	24		13		—		—		—		2
Minimum volume commitments invoiced	(7)		(5)		—		—		—		—

Amortization of contract assets	(25)		(2)		—		—		(1)		(1)
Balance at end of period	$	105	$	108	$	12	$	13	$	23	$	24

	Nine Months Ended September 30,
	Williams				Transco				NWP
	2026		2025		2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	109	$	98	$	13	$	10	$	24	$	21
Revenue recognized in excess of amounts invoiced	61		71		—		4		—		5

Minimum volume commitments invoiced	(17)		(58)		—		—		—		—
Amortization of contract assets	(48)		(3)		(1)		(1)		(1)		(2)
Balance at end of period	$	105	$	108	$	12	$	13	$	23	$	24

Contract Liabilities

The following tables present a reconciliation of contract liabilities:


	Three Months Ended September 30,
	Williams				Transco
	2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	932	$	1,054	$	157	$	168
Payments received and deferred	42		32		—		—
Liabilities acquired and other additions	49		—		—		—
Significant financing component	2		1		—		—

Recognized in revenue	(77)		(83)		(2)		(3)
Balance at end of period	$	948	$	1,004	$	155	$	165

	Nine Months Ended September 30,
	Williams				Transco
	2026		2025		2026		2025
	(Millions)
Balance at beginning of period	$	948	$	1,046	$	163	$	173
Payments received and deferred	169		152		—		—
Liabilities acquired and other additions	49		23		—		—
Significant financing component	5		5		—		—

Recognized in revenue	(223)		(222)		(8)		(8)
Balance at end of period	$	948	$	1,004	$	155	$	165

The following table presents the amount of the contract liabilities balance expected to be recognized as revenue when performance obligations are satisfied as of September 30, 2026:


	Contract Liabilities
	Williams		Transco
	(Millions)
2026 (three months)	$	57	$	3
2027 (one year)	174		11
2028 (one year)	138		11
2029 (one year)	110		10
2030 (one year)	75		10
Thereafter	394		110
Total	$	948	$	155

Remaining Performance Obligations

Remaining performance obligations primarily include reservation charges on contracted capacity for Williams’ gas pipeline firm transportation contracts with customers, storage capacity contracts, long-term contracts containing MVC associated with midstream businesses, and fixed payments associated with offshore gathering and transportation. For Williams’ interstate natural gas pipeline businesses, including Transco and NWP, remaining performance obligations generally reflect the expected rates for such services for the life of the related contracts; however, these rates may change based on future tariffs approved by the FERC.

Remaining performance obligations exclude variable consideration, including contracts with variable consideration for which it has elected the practical expedient for consideration recognized in revenue as billed. Certain of its contracts contain evergreen and other renewal provisions for periods beyond the initial term of the contract. The remaining performance obligation amounts as of September 30, 2026, do not consider potential future performance obligations for which the renewal has not been exercised and exclude contracts with customers for which the underlying facilities have not received FERC authorization to be placed into service. Consideration received prior to September 30, 2026, that will be recognized in future periods is also excluded from its remaining performance obligations and is instead reflected in contract liabilities.

The following table presents the transaction price allocated to the remaining performance obligations under certain contracts as of September 30, 2026:


	Remaining Performance Obligations
	Williams		Transco		NWP
	(Millions)
2026 (three months)	$	1,202	$	761	$	105
2027 (one year)	4,720		2,934		419
2028 (one year)	4,239		2,655		399
2029 (one year)	3,773		2,370		373
2030 (one year)	3,034		1,843		367
Thereafter	15,573		10,467		2,345
Total	$	32,541	$	21,030	$	4,008

Accounts Receivable

The following is a summary of Williams’ Trade accounts and other receivables:


	September 30, 2026		December 31, 2025
	(Millions)
Accounts receivable related to revenues from contracts with customers	$	1,697	$	1,532
Receivables from derivatives	133		444
Other accounts receivable	268		108
Trade accounts and other receivables	$	2,098	$	2,084

Transco and NWP receivables from contracts with customers are included within Receivables - Trade and Receivables - Affiliates. Receivables that are not related to contracts with customers are included within Receivables - Advances to affiliate and Receivables - Other.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/606/tableOfContent

+ Details

Statement of Changes in Member's Equity (Unaudited) - NWP - USD ($) $ in Millions	Total	Northwest Pipeline LLC [Member]	Member's Capital Northwest Pipeline LLC [Member]	Retained Earnings Northwest Pipeline LLC [Member]
Balance at beginning of period at Dec. 31, 2024			$ 1,074	$ 89
Statement [Line Items]
Cash contributions from parent		$ (181)	181
Partners' Capital Account, Return of Capital			0
Net income	$ 1,884			135
Cash distributions to parent		106		(106)
Balance at end of period at Sep. 30, 2025		1,373	1,255	118
Balance at beginning of period at Jun. 30, 2025			1,205	116
Statement [Line Items]
Cash contributions from parent			50
Partners' Capital Account, Return of Capital			0
Net income	647			44
Cash distributions to parent				(42)
Balance at end of period at Sep. 30, 2025		1,373	1,255	118
Balance at beginning of period at Dec. 31, 2025		1,427	1,305	122
Statement [Line Items]
Cash contributions from parent		(25)	25
Partners' Capital Account, Return of Capital			(2)
Net income	2,392			152
Cash distributions to parent		118		(118)
Balance at end of period at Sep. 30, 2026		1,484	1,328	156
Balance at beginning of period at Jun. 30, 2026			1,328	142
Statement [Line Items]
Cash contributions from parent			0
Partners' Capital Account, Return of Capital			0
Net income	$ 700			53
Cash distributions to parent				(39)
Balance at end of period at Sep. 30, 2026		$ 1,484	$ 1,328	$ 156

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480070/505-10-S50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482705/350-40-65-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (e)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479719/606-10-65-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-7

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-5A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-10

Reference 9: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-4

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-21

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-14

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-4

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479887/480-10-S45-3

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3A
-Subparagraph (24)(d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 105
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 9
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479343/105-10-65-9

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 17
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480336/718-10-65-17

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 27: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482765/220-10-50-6

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-3

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480175/815-40-65-1

Reference 32: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-11

Reference 39: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-11

Reference 40: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 41: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 42: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-7

Reference 43: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 44: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 45: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 46: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 47: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 48: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B

Reference 49: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 50: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A

Reference 51: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B

Reference 52: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (f)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481538/470-20-65-4

Reference 53: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-8

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-4

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-5

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480070/505-10-S50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-5

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-3

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481142/505-10-45-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S35
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480125/505-10-S35-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 7
-Subparagraph (SAB Topic 5.Q.Q2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-7

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 22: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483467/210-10-45-1

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-8

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(27))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-13

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-11

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-9

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(23))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(27)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 34: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-4

Reference 35: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-21

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478009/946-205-45-6

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479887/480-10-S45-1

Reference 39: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479887/480-10-S45-2

Reference 40: http://www.xbrl.org/2003/role/disclosureRef
-Topic 480
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480244/480-10-S99-1

Reference 41: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 35
-Paragraph 12A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479165/842-20-35-12A

Reference 42: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483421/250-10-45-24

Reference 43: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 23
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483421/250-10-45-23

Reference 44: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483421/250-10-45-5

Reference 45: http://www.xbrl.org/2003/role/disclosureRef
-Topic 272
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483014/272-10-45-1

Reference 46: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1

Reference 47: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477802/946-310-45-1

Reference 48: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(3)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 49: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 50: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-4

Reference 51: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(12)(b)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 52: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(12)(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 53: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(12)(b)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 54: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(13)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 55: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(13)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 56: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.6-05(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-2

Reference 57: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(c)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 58: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(c)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 59: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(c)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 60: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(c)(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 61: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(3)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 62: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(6)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 63: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 64: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(a)(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 65: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(4)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 66: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3

Reference 67: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 68: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(2)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 69: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(2)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 70: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(3)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 71: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(6)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 72: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(6)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 73: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(6)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 74: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 75: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 76: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(16)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 77: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 78: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 79: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 80: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 81: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 82: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 83: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(a)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 84: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(c)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 85: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(7)(c)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 86: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-3

+ Details

Divestitures (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended				9 Months Ended
Divestitures (Details) - USD ($) $ in Millions	Jun. 30, 2026	Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Aug. 31, 2026	Feb. 28, 2026	Jan. 30, 2026
Business Combination [Line Items]
Gain on sale of certain assets		$ 83			$ 0	$ 277	$ 0
Proceeds from disposition of equity-method investments (Note 3)						6	0
Equity Method Investment, Realized Gain (Loss) on Disposal						$ 127	$ 0
Certain South Mansfield Upstream Interests
Business Combination [Line Items]
Disposal Group, Consideration										$ 398
Gain on sale of certain assets			$ 12	$ 182
West [Member] \| Brazos Permian II, LLC [Member]
Business Combination [Line Items]
Proceeds from disposition of equity-method investments (Note 3)	$ 143
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 127
West [Member] \| Consolidated Permian Gathering Assets
Business Combination [Line Items]
Disposal Group, Consideration								$ 139
Gain on sale of certain assets		$ 83
West [Member] \| Gas Gathering Assets In Mid Continent Region
Business Combination [Line Items]
Disposal Group, Consideration									$ 48

Debt and Banking Arrangements

9 Months Ended

Sep. 30, 2026

Debt Disclosure [Abstract]

Debt and Banking Arrangements [Text Block]

Note 6 – Debt and Banking Arrangements

Senior Unsecured Debt Activity

Issuances

Issuances in 2026 are as follows:


Issue Date	Maturity Date	Amount		Rate
		(Millions)
Williams’ Public Issuances:
September 10, 2026	October 15, 2029	$	500	5.000%
September 10, 2026	September 15, 2033	1,000		5.600%
September 10, 2026	September 15, 2036	750		5.800%
September 10, 2026	September 15, 2056	500		6.400%
January 8, 2026 (1)	March 15, 2033	500		5.650%
January 8, 2026	March 15, 2036	1,250		5.150%
January 8, 2026	March 15, 2056	1,000		5.950%

________________

(1) Additional issuance of the 5.65 percent senior notes due 2033 issued on March 2, 2023, and trade interchangeably with such notes.

In connection with the Momentum Acquisition, Williams retained $869 million outstanding principal amount of secured variable rate debt due in 2029 (see Note 3 – Acquisitions and Divestitures).

Retirements

Retirements in 2026 are as follows:

Date of Retirement

Maturity Date

Amount

Rate

(Millions)

Williams:

March 2, 2026

1,100

5.400%

Transco Debt Registration Rights

On November 20, 2025, Transco issued $1 billion of 5.1 percent senior unsecured notes due 2036 and $700 million of 5.75 percent senior unsecured notes due 2056. As part of the private debt placement, Transco entered into a registration rights agreement with the initial purchasers of the unsecured notes. Transco filed the registration statement in February 2026 and completed the exchange offer in April 2026.

Credit Facilities

On May 19, 2026, Williams, along with Transco and NWP, entered into a second amended and restated credit agreement (Williams Credit Agreement) with the lenders named therein and the administrative agent that provides for aggregate commitments of up to $3.75 billion, with the ability to increase such commitments by up to an additional $500 million under certain circumstances, not to exceed $4.25 billion in total. The Williams Credit Agreement was effective on May 19, 2026 and matures on May 19, 2031, and permits an additional one‑year maturity extension up to two times, subject to specified conditions. The facility also permits swing line loans of up to $200 million and letters of credit commitments of up to $500 million. Transco and NWP are each able to borrow up to $500 million under the facility, subject to availability.

On May 19, 2026, Williams, along with Transco and NWP, also entered into a 364-day credit agreement (364-Day Credit Agreement, and together with the Williams Credit Agreement, the Credit Agreements) with the lenders named therein and the administrative agent that provides for aggregate commitments of up to $1 billion with the ability to increase such commitments by up to an additional $150 million under certain circumstances. However, at no time may the aggregate commitments under the 364-Day Credit Agreement exceed $1.15 billion. The facility matures 364 days after the effective date of the 364-Day Credit Agreement (364-Day Maturity Date). The Borrowers may request, prior to the 364-Day Maturity Date, that the revolving loans under the 364-Day Credit Agreement be converted on the 364-Day Maturity Date into term loans that mature one year after the 364-Day Maturity Date, subject to certain conditions. Transco and NWP are each subject to a $100 million borrowing sublimit.

The Credit Agreements contain the following terms and conditions:

•Various covenants may limit, among other things, a borrower’s and its material subsidiaries’ ability to grant certain liens supporting indebtedness, merge or consolidate, sell all or substantially all of its assets in certain circumstances, make certain distributions during an event of default, and each borrower and each borrower’s respective material subsidiaries’ ability to enter into certain restrictive agreements.

•If an event of default with respect to a borrower occurs under the Credit Agreements, the lenders will be able to terminate the commitments for the respective borrowers and accelerate the maturity of the loans of the defaulting borrower under the applicable credit facility and exercise other rights and remedies.

•Other than swing line loans, each time funds are borrowed, the applicable borrower may choose from two methods of calculating interest based on either a fluctuating or periodic fixed base rate, plus an applicable margin. Williams is required to pay a commitment fee based on the unused portion of the applicable Credit Agreements. The applicable margin is determined by reference to a pricing schedule based on the applicable borrower’s senior unsecured long-term debt ratings and the commitment fee is determined by reference to a pricing schedule based on Williams’ senior unsecured long-term debt ratings.

Significant financial covenants under the Credit Agreements require Williams’ ratio of debt to EBITDA (earnings before interest, taxes, depreciation, and amortization), each as defined, to be no greater than 5.0 to 1.0, except that for any fiscal quarter in which the funding of the purchase price for an acquisition (whether effectuated as one or a series of related transactions) with an aggregate purchase price of $25 million or more has been effected, and the following two fiscal quarters (in each case subject to certain limitations), the ratio of debt to EBITDA is to be no greater than 5.5 to 1.

The ratio of debt to capitalization (defined as net worth plus debt), each as defined, must be no greater than 65 percent for each of Transco and NWP.


	September 30, 2026
	Stated Capacity		Outstanding
	(Millions)
Williams Credit Agreement (1)(2)	$	3,750	$	—
364-Day Credit Agreement (2)	1,000		—
Letters of credit under certain bilateral bank agreements			17

________________

(2) Williams expects to be in compliance with the associated covenants for the September 30, 2026, reporting period.

Commercial Paper Program

At September 30, 2026, no commercial paper was outstanding under Williams’ $3.5 billion commercial paper program.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-8

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-9

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 24: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/470/tableOfContent

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

+ Details

Consolidated Statement of Comprehensive Income (Unaudited) - Williams - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Revenues:
Revenues	$ 3,223	$ 2,923	$ 9,306	$ 8,752
Costs and expenses:
Operating and maintenance expenses	639	583	1,801	1,697
Depreciation, depletion, and amortization expenses	620	564	1,796	1,754
General and administrative expenses	275	168	648	530
Gain on sale of certain assets (Note 3)	(83)	0	(277)	0
Other operating (income) expense – net	4	14	(6)	17
Total costs and expenses	2,087	1,814	5,667	5,604
Operating income (loss)	1,136	1,109	3,639	3,148
Equity earnings (losses)	157	152	477	449
Other investing income (loss) – net (Note 3)	30	19	188	31
Interest expense	(385)	(372)	(1,132)	(1,071)
Other income (expense) – net	50	21	108	51
Income (loss) before income taxes	988	929	3,280	2,608
Less: Provision (benefit) for income taxes	221	246	725	613
Net income (loss)	767	683	2,555	1,995
Less: Net income (loss) attributable to noncontrolling interests	67	36	163	111
Net income	700	647	2,392	1,884
Less: Preferred stock dividends	1	1	2	2
Net income (loss) available to common stockholders	$ 699	$ 646	$ 2,390	$ 1,882
Basic earnings (loss) per common share:
Net income (loss) available to common stockholders - Basic	$ 0.56	$ 0.53	$ 1.95	$ 1.54
Weighted Average Number of Shares Outstanding, Basic	1,238	1,222	1,228	1,221
Diluted earnings (loss) per common share:
Net income (loss) available to common stockholders - Diluted	$ 0.56	$ 0.53	$ 1.94	$ 1.54
Weighted Average Number of Shares Outstanding, Diluted	1,239	1,225	1,230	1,224
Comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax	$ 1	$ (4)	$ (2)	$ (3)
Comprehensive income (loss)	768	679	2,553	1,992
Less: Comprehensive income (loss) attributable to noncontrolling interests	67	36	163	111
Comprehensive income (loss) attributable to The Williams Companies, Inc.	701	643	2,390	1,881
Service [Member]
Revenues:
Revenues	2,319	2,121	6,677	6,165
NonRegulated Service Commodity Consideration [Member]
Revenues:
Revenues	57	45	148	141
Product [Member]
Revenues:
Revenues	845	701	2,744	2,416
Energy Commodities and Service
Revenues:
Revenues	2	56	(263)	30
Oil and Gas, Purchased [Member]
Costs and expenses:
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	618	471	1,670	1,560
Natural Gas Purchased For Shrink [Member]
Costs and expenses:
Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization	$ 14	$ 14	$ 35	$ 46

Consolidated Statement of Changes in Equity (Parenthetical) (Unaudited) - Williams - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.525	$ 0.500	$ 1.575	$ 1.500

Consolidated Statement of Cash Flows (Unaudited) - Williams - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
OPERATING ACTIVITIES:
Net income (loss)	$ 2,555	$ 1,995
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation, depletion, and amortization	1,796	1,754
Provision (benefit) for deferred income taxes	716	442
Equity (earnings) losses	(477)	(449)
Distributions from equity-method investees	678	600
Gain on sale of certain assets (Note 3)	(277)	0
Net unrealized (gain) loss from commodity derivative instruments	61	(55)
Gain on disposition of equity-method investments (Note 3)	(127)	0
Inventory write-downs	14	5
Amortization of stock-based awards	65	70
Cash provided (used) by changes in current assets and liabilities:
Accounts receivable	154	384
Inventories	(18)	(66)
Other current assets and deferred charges	(40)	(43)
Accounts payable	(302)	(359)
Other current liabilities	(196)	95
Changes in current and noncurrent commodity derivative assets and liabilities	(31)	77
Other, including changes in noncurrent assets and liabilities	(87)	(128)
Net cash provided (used) by operating activities	4,484	4,322
FINANCING ACTIVITIES:
Proceeds from (payments of) commercial paper – net	(700)	(284)
Proceeds from long-term debt	5,538	2,994
Payments of long-term debt	(1,137)	(1,733)
Payments for debt issuance costs	(51)	(29)
Proceeds from issuance of common stock	13	9
Common dividends paid	(1,940)	(1,832)
Dividends and distributions paid to noncontrolling interests	(215)	(197)
Other – net	(76)	(60)
Net cash provided (used) by financing activities	5,207	(1,110)
INVESTING ACTIVITIES:
Capital expenditures (1)	(5,682)	(2,938)
Dispositions – net (Note 3)	324	(80)
Proceeds from sale of business (Note 3)	187	0
Purchases of businesses, net of cash acquired (Note 3)	(2,816)	(1)
Proceeds from disposition of equity-method investments (Note 3)	6	0
Purchases of and contributions to equity-method investments	(156)	(192)
Other – net	139	9
Net cash provided (used) by investing activities	(7,998)	(3,202)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	1,693	10
Cash and cash equivalents at beginning of year	63	60
Cash and cash equivalents at end of period	1,756	70
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
(1) Increases to property, plant, and equipment	(6,013)	(3,079)
Changes in related accounts payable and accrued liabilities	331	141
Capital expenditures	(5,682)	(2,938)
Pantheon
FINANCING ACTIVITIES:
Contributions from noncontrolling interests	3,737	0
AllOtherEntitiesInWhichOwnershipIsDisclosed
FINANCING ACTIVITIES:
Contributions from noncontrolling interests	$ 38	$ 22

Consolidated Balance Sheet (Parenthetical) (Unaudited) - Williams - USD ($) shares in Thousands, $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Statement [Line Items]
Accounts Receivable, Allowance for Credit Loss, Current	$ 1	$ 1
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	1,470,000	1,470,000
Common Stock, Shares, Issued	1,290,000	1,261,000
Treasury Stock, Common, Shares	39,000	39,000
Series B Preferred Stock [Member]
Statement [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 1	$ 1
Preferred Stock, Shares Authorized	30,000	30,000
Preferred Stock, Shares Issued	35	35

Segment Disclosures Recon from Segment to Consolidated - Revenues, Modified EBITDA, and Significant Expenses (Details)
$ in Millions

3 Months Ended

9 Months Ended

Sep. 30, 2026

USD ($)

Jun. 30, 2026

USD ($)

Mar. 31, 2026

USD ($)

Dec. 31, 2025

USD ($)

Sep. 30, 2025

USD ($)

Sep. 30, 2026

USD ($)

Reportable_segment

Sep. 30, 2025

USD ($)

Segment Reporting [Line Items]

Revenues

$ 3,223

$ 2,923

$ 9,306

$ 8,752

Other financial information:

Gain on sale of certain assets (Note 3)

277

Proportional Modified EBITDA Equity Method Investments

(252)

(250)

(760)

(717)

Depreciation, Depletion and Amortization

(620)

(564)

(1,796)

(1,754)

Income (Loss) from Equity Method Investments

157

152

477

449

Other investing income (loss) - net

188

Interest expense

(385)

(372)

(1,132)

(1,071)

Asset Retirement Obligation Accretion Expense For Nonregulated Operations

(26)

(23)

(73)

(71)

Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest

988

929

$ 3,280

2,608

Number of Reportable Segments | Reportable_segment

Certain South Mansfield Upstream Interests

Other financial information:

Gain on sale of certain assets (Note 3)

$ 12

$ 182

Other financial information:

Unrealized Gain (Loss) on Derivatives

$ 1

Other financial information:

Unrealized Gain (Loss) on Derivatives

(62)

Service [Member]

Segment Reporting [Line Items]

Revenues

2,319

2,121

6,677

6,165

NonRegulated Service Commodity Consideration [Member]

Segment Reporting [Line Items]

Revenues

148

141

Product [Member]

Segment Reporting [Line Items]

Revenues

845

701

2,744

2,416

Energy Commodities and Service

Segment Reporting [Line Items]

Revenues

(263)

Operating Segments [Member] | Transmission, Power & Gulf [Member]

Segment Reporting [Line Items]

Revenues

1,526

1,392

4,352

3,976

Other financial information:

Product Costs And Net Realized Processing Commodity Expenses

(175)

(139)

(446)

(381)

Operating And Administrative Expenses

^[1]

(353)

(290)

(935)

(846)

Recovery of Direct Costs

^[2]

(76)

(64)

(201)

(189)

Other Segment Income (Expenses) - Net

^[3]

Gain on sale of certain assets (Note 3)

Proportional Modified EBITDA Equity Method Investments

111

110

Modified EBITDA

1,000

973

2,969

2,722

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

Other financial information:

Unrealized Gain (Loss) on Derivatives

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member]

Segment Reporting [Line Items]

Revenues

1,328

1,237

3,852

3,548

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member] | External Customer

Segment Reporting [Line Items]

Revenues

1,304

1,213

3,780

3,476

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Service [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Transmission, Power & Gulf [Member] | NonRegulated Service Commodity Consideration [Member]

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member]

Segment Reporting [Line Items]

Revenues

170

130

428

353

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member] | External Customer

Segment Reporting [Line Items]

Revenues

104

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Product [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

127

324

254

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Commodities and Service

Segment Reporting [Line Items]

Revenues

^[4]

(4)

(9)

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Commodities and Service | Realized Gain (Loss)

Segment Reporting [Line Items]

Revenues

(4)

(9)

Operating Segments [Member] | Transmission, Power & Gulf [Member] | Energy Commodities and Service | Unrealized Gain (Loss)

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Northeast G & P [Member]

Segment Reporting [Line Items]

Revenues

552

530

1,642

1,626

Other financial information:

Product Costs And Net Realized Processing Commodity Expenses

(16)

(25)

(73)

(115)

Operating And Administrative Expenses

^[1]

(111)

(114)

(323)

(333)

Recovery of Direct Costs

^[2]

(49)

(42)

(146)

(125)

Other Segment Income (Expenses) - Net

^[3]

(3)

(5)

(7)

Gain on sale of certain assets (Note 3)

Proportional Modified EBITDA Equity Method Investments

169

161

505

474

Modified EBITDA

542

505

1,606

1,520

Operating Segments [Member] | Northeast G & P [Member] | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

Other financial information:

Unrealized Gain (Loss) on Derivatives

Operating Segments [Member] | Northeast G & P [Member] | Service [Member]

Segment Reporting [Line Items]

Revenues

536

499

1,569

1,493

Operating Segments [Member] | Northeast G & P [Member] | Service [Member] | External Customer

Segment Reporting [Line Items]

Revenues

533

495

1,559

1,482

Operating Segments [Member] | Northeast G & P [Member] | Service [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Northeast G & P [Member] | NonRegulated Service Commodity Consideration [Member]

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Northeast G & P [Member] | Product [Member]

Segment Reporting [Line Items]

Revenues

132

Operating Segments [Member] | Northeast G & P [Member] | Product [Member] | External Customer

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Northeast G & P [Member] | Product [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Northeast G & P [Member] | Energy Commodities and Service

Segment Reporting [Line Items]

Revenues

^[4]

Operating Segments [Member] | Northeast G & P [Member] | Energy Commodities and Service | Realized Gain (Loss)

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Northeast G & P [Member] | Energy Commodities and Service | Unrealized Gain (Loss)

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | West [Member]

Segment Reporting [Line Items]

Revenues

859

712

2,338

2,113

Other financial information:

Product Costs And Net Realized Processing Commodity Expenses

(285)

(211)

(723)

(666)

Operating And Administrative Expenses

^[1]

(215)

(150)

(530)

(452)

Recovery of Direct Costs

^[2]

(18)

(17)

(54)

(46)

Other Segment Income (Expenses) - Net

^[3]

(1)

(28)

(18)

Gain on sale of certain assets (Note 3)

Proportional Modified EBITDA Equity Method Investments

106

Modified EBITDA

451

342

1,217

1,037

Operating Segments [Member] | West [Member] | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

Other financial information:

Unrealized Gain (Loss) on Derivatives

Operating Segments [Member] | West [Member] | Service [Member]

Segment Reporting [Line Items]

Revenues

538

470

1,520

1,354

Operating Segments [Member] | West [Member] | Service [Member] | External Customer

Segment Reporting [Line Items]

Revenues

471

409

1,319

1,195

Operating Segments [Member] | West [Member] | Service [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

201

159

Operating Segments [Member] | West [Member] | NonRegulated Service Commodity Consideration [Member]

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | West [Member] | Product [Member]

Segment Reporting [Line Items]

Revenues

296

219

754

693

Operating Segments [Member] | West [Member] | Product [Member] | External Customer

Segment Reporting [Line Items]

Revenues

155

109

Operating Segments [Member] | West [Member] | Product [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

212

181

599

584

Operating Segments [Member] | West [Member] | Energy Commodities and Service

Segment Reporting [Line Items]

Revenues

^[4]

(2)

Operating Segments [Member] | West [Member] | Energy Commodities and Service | Realized Gain (Loss)

Segment Reporting [Line Items]

Revenues

(2)

Operating Segments [Member] | West [Member] | Energy Commodities and Service | Unrealized Gain (Loss)

Segment Reporting [Line Items]

Revenues

Operating Segments [Member] | Gas & NGL Marketing Services

Segment Reporting [Line Items]

Revenues

^[5]

586

448

1,758

1,548

Other financial information:

Product Costs And Net Realized Processing Commodity Expenses

(545)

(398)

(1,530)

(1,332)

Operating And Administrative Expenses

^[1]

(19)

(14)

(71)

(72)

Recovery of Direct Costs

^[2]

Other Segment Income (Expenses) - Net

^[3]

(1)

Gain on sale of certain assets (Note 3)

Proportional Modified EBITDA Equity Method Investments

Modified EBITDA

202

176

Operating Segments [Member] | Gas & NGL Marketing Services | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

Other financial information:

Unrealized Gain (Loss) on Derivatives

Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member]

Segment Reporting [Line Items]

Revenues

^[5]

Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member] | External Customer

Segment Reporting [Line Items]

Revenues

^[5]

Operating Segments [Member] | Gas & NGL Marketing Services | Service [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

^[5]

Operating Segments [Member] | Gas & NGL Marketing Services | NonRegulated Service Commodity Consideration [Member]

Segment Reporting [Line Items]

Revenues

^[5]

Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member]

Segment Reporting [Line Items]

Revenues

^[5]

557

415

1,958

1,557

Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member] | External Customer

Segment Reporting [Line Items]

Revenues

^[5]

664

576

2,282

2,037

Operating Segments [Member] | Gas & NGL Marketing Services | Product [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

^[5]

(107)

(161)

(324)

(480)

Operating Segments [Member] | Gas & NGL Marketing Services | Energy Commodities and Service

Segment Reporting [Line Items]

Revenues

^[4],[5]

(200)

(9)

Operating Segments [Member] | Gas & NGL Marketing Services | Energy Commodities and Service | Realized Gain (Loss)

Segment Reporting [Line Items]

Revenues

^[5]

(3)

(11)

(159)

(44)

Operating Segments [Member] | Gas & NGL Marketing Services | Energy Commodities and Service | Unrealized Gain (Loss)

Segment Reporting [Line Items]

Revenues

^[5]

(41)

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment

Segment Reporting [Line Items]

Revenues

3,523

3,082

10,090

9,263

Other financial information:

Modified EBITDA

2,032

1,874

5,994

5,455

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Service [Member]

Segment Reporting [Line Items]

Revenues

2,402

2,206

6,941

6,395

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Service [Member] | External Customer

Segment Reporting [Line Items]

Revenues

2,308

2,117

6,658

6,153

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Service [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

283

242

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | NonRegulated Service Commodity Consideration [Member]

Segment Reporting [Line Items]

Revenues

148

141

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Product [Member]

Segment Reporting [Line Items]

Revenues

1,039

795

3,212

2,735

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Product [Member] | External Customer

Segment Reporting [Line Items]

Revenues

798

663

2,570

2,287

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Product [Member] | Internal Customer

Segment Reporting [Line Items]

Revenues

241

132

642

448

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Energy Commodities and Service

Segment Reporting [Line Items]

Revenues

^[4]

(211)

(8)

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Energy Commodities and Service | Realized Gain (Loss)

Segment Reporting [Line Items]

Revenues

(7)

(8)

(170)

(43)

Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment | Energy Commodities and Service | Unrealized Gain (Loss)

Segment Reporting [Line Items]

Revenues

(41)

Corporate, Non-Segment | Other Operating Segment

Segment Reporting [Line Items]

Revenues

131

160

391

478

Other financial information:

Modified EBITDA

188

286

Corporate, Non-Segment | Other Operating Segment | Certain South Mansfield Upstream Interests

Other financial information:

Gain on sale of certain assets (Note 3)

194

Intersegment Eliminations [Member]

Segment Reporting [Line Items]

Revenues

(431)

(319)

(1,175)

(989)

Williams Companies Inc [Member] | West [Member] | Income Statement Location [Axis]: us-gaap:OtherAssetImpairmentCharges | Level 2 [Member]

Other financial information:

Impairment of Long-Lived Assets to be Disposed of

$ 176

Transcontinental Gas Pipe Line Company, LLC [Member]

Segment Reporting [Line Items]

Revenues

840

844

2,491

2,405

Other financial information:

Depreciation, Depletion and Amortization

(148)

(111)

(438)

(426)

Interest expense

(82)

(251)

(244)

Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest

369

410

$ 1,120

1,045

Number of Reportable Segments | Reportable_segment

Northwest Pipeline LLC [Member]

Segment Reporting [Line Items]

Revenues

119

114

$ 357

338

Other financial information:

Depreciation, Depletion and Amortization

(31)

(29)

(92)

(88)

Interest expense

(8)

(7)

(25)

(21)

Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest

$ 53

$ 44

$ 152

$ 135

Number of Reportable Segments | Reportable_segment

[1]	Segment operating and administrative expenses primarily include payroll, maintenance and operating costs and taxes, and general and administrative expenses, including acquisition and transition-related expenses. It also includes project execution, information technology, finance and accounting, real estate and aviation, central engineering services, safety and operational discipline, supply chain and digital transformation, corporate strategic development, human resources, legal and government affairs, and executive and audit support services costs which are centrally managed and allocated to segments.
[2]	Recoverable power, transportation and storage costs are charges incurred which are reimbursable pursuant to FERC stipulations, customer contracts, or certain power purchase agreements.
[3]	Other segment income (expenses) - net primarily includes equity AFUDC and regulatory credits and charges related to Williams’ regulated operations, as well as the write-off of certain compression assets in the West segment in the third quarter of 2025.
[4]	Williams records transactions that qualify as commodity derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses from commodity derivatives held for energy trading purposes are presented on a net basis in revenue.
[5]	As Williams is acting as agent for natural gas marketing customers or engages in energy trading activities, the resulting revenues are presented net of the related costs of those activities.

Acquisitions (Details) - USD ($)
shares in Millions, $ in Millions

1 Months Ended

3 Months Ended

9 Months Ended

Sep. 03, 2026

Sep. 30, 2026

Sep. 30, 2025

Sep. 30, 2026

Sep. 30, 2025

Business Combination [Line Items]

Payments to Acquire Businesses, Net of Cash Acquired

$ 2,816

$ 1

Revenues

$ 3,223

$ 2,923

9,306

8,752

Net income

700

647

2,392

1,884

Pro Forma [Member]

Business Combination [Line Items]

Business Combination, Pro Forma Information, Pro Forma Revenue

3,574

3,250

10,599

9,815

Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax

723

660

2,462

1,891

Momentum Acquisition [Member] | Pro Forma [Member]

Business Combination [Line Items]

Business Combination, Pro Forma Information, Pro Forma Revenue

351

^[1]

327

1,293

^[1]

1,063

Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax

$ 23

^[1]

$ 13

^[1]

$ 7

Momentum Acquisition [Member] | West [Member]

Business Combination [Line Items]

Business Combination, Voting Equity Interest Acquired, Percentage

100.00%

Business Combination, Consideration Transferred

$ 5,100

Payments to Acquire Businesses, Net of Cash Acquired

2,800

Revenues

$ 113

Modified EBITDA Earnings Loss

$ 40

Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent

228

Business Combination, Recognized Asset Acquired, Receivable, Current

179

Business Combination, Recognized Asset Acquired, Other Asset, Current

Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment

5,763

Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived

490

Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent

Business Combination, Recognized Asset Acquired, Asset

6,668

Business Combination, Recognized Liability Assumed, Other Liability, Current

(142)

Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent

(898)

Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent

(50)

Business Combination, Recognized Liability Assumed, Liability

(1,090)

Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)

5,578

Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value

(450)

Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Less Noncontrolling Interest

$ 5,128

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

20 years

Acquired Finite-lived Intangible Asset, Weighted-Average Period before Renewal or Extension

9 years

Momentum Acquisition [Member] | West [Member] | NG3 [Member]

Business Combination [Line Items]

Business Combination, Consideration Transferred, Liabilities Incurred

$ 869

Momentum Acquisition [Member] | West [Member] | Common Stock

Business Combination [Line Items]

Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares

Momentum Acquisition [Member] | West [Member] | Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense

Business Combination [Line Items]

Business Combination Acquisition Related Costs Cumulative

$ 33

[1]	Excludes results from operations acquired in the acquisition for the period beginning on the acquisition date, as these results are included in the amounts as reported.

Commodity Derivatives - Notional Volumes (Details) - Not Designated as Hedging Instrument [Member]	Sep. 30, 2026 MMBTU Boe
Public Utilities, Inventory, Natural Gas \| IndexRisk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Nonmonetary Notional Amount Net Long Short Position Volume \| MMBTU	1,011,810,669
Public Utilities, Inventory, Natural Gas \| Central Hub Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Nonmonetary Notional Amount Net Long Short Position Volume \| MMBTU	(30,910,653)
Public Utilities, Inventory, Natural Gas \| Basis Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Nonmonetary Notional Amount Net Long Short Position Volume \| MMBTU	514,399,483
Natural Gas Liquids \| Central Hub Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Nonmonetary Notional Amount Net Long Short Position Volume \| Boe	(1,320,000)
Natural Gas Liquids \| Basis Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Nonmonetary Notional Amount Net Long Short Position Volume \| Boe	(255,000)
Crude Oil \| Central Hub Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Nonmonetary Notional Amount Net Long Short Position Volume \| Boe	(405,000)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Statement of Net Income (Unaudited) - Transco - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Revenues [Abstract]
Revenues	$ 3,223	$ 2,923	$ 9,306	$ 8,752
Costs and Expenses [Abstract]
Operating and maintenance expenses	639	583	1,801	1,697
Depreciation, depletion, and amortization expenses	620	564	1,796	1,754
General and Administrative Expense	275	168	648	530
Other operating (income) expense – net	4	14	(6)	17
Total costs and expenses	2,087	1,814	5,667	5,604
Operating income (loss)	1,136	1,109	3,639	3,148
Interest expense	(385)	(372)	(1,132)	(1,071)
Other income (expense) – net	50	21	108	51
Net income (loss)	988	929	3,280	2,608
Transcontinental Gas Pipe Line Company, LLC [Member]
Revenues [Abstract]
Revenues	840	844	2,491	2,405
Costs and Expenses [Abstract]
Depreciation, depletion, and amortization expenses	148	111	438	426
Taxes, other than income taxes	32	30	96	91
Other operating (income) expense – net	4	4	13	25
Total costs and expenses	421	369	1,205	1,161
Operating income (loss)	419	475	1,286	1,244
Interest expense	(82)	(82)	(251)	(244)
Allowance for equity and borrowed funds used during construction (AFUDC)	23	10	52	25
Other income (expense) – net	0	(1)	1	(3)
Net income (loss)	369	410	1,120	1,045
Transcontinental Gas Pipe Line Company, LLC [Member] \| Affiliates
Costs and Expenses [Abstract]
Product costs	1	2	4	7
Operating and maintenance expenses	50	43	140	127
General and Administrative Expense	52	45	147	135
Interest Income, Other	7	6	27	18
Transcontinental Gas Pipe Line Company, LLC [Member] \| Third-party
Costs and Expenses [Abstract]
Product costs	36	35	87	74
Operating and maintenance expenses	91	88	253	245
General and Administrative Expense	7	11	27	31
Interest Income, Other	2	2	5	5
Transcontinental Gas Pipe Line Company, LLC [Member] \| Natural gas transportation service \| Affiliates
Revenues [Abstract]
Revenues	18	19	53	55
Transcontinental Gas Pipe Line Company, LLC [Member] \| Natural gas transportation service \| Third-party
Revenues [Abstract]
Revenues	716	731	2,135	2,079
Transcontinental Gas Pipe Line Company, LLC [Member] \| Natural gas storage service
Revenues [Abstract]
Revenues	58	51	175	169
Transcontinental Gas Pipe Line Company, LLC [Member] \| Natural Gas Product Sales \| Affiliates
Revenues [Abstract]
Revenues	4	2	16	6
Transcontinental Gas Pipe Line Company, LLC [Member] \| Natural Gas Product Sales \| Third-party
Revenues [Abstract]
Revenues	33	35	75	75
Transcontinental Gas Pipe Line Company, LLC [Member] \| Other service \| Affiliates
Revenues [Abstract]
Revenues	2	0	4	2
Transcontinental Gas Pipe Line Company, LLC [Member] \| Other service \| Third-party
Revenues [Abstract]
Revenues	$ 9	$ 6	$ 33	$ 19

Variable Interest Entities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Dec. 31, 2024
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 1,756	$ 63	$ 70	$ 60
Receivables, Net, Current	2,098	2,084
Inventories	319	314
Other current assets and deferred charges	427	256
Property, plant, and equipment – net	52,531	41,996
Intangible assets – net	6,972	6,763
Regulatory assets, deferred charges, and other	1,938	2,011
Accounts payable	(2,441)	(2,224)
Other current liabilities	(1,545)	(1,639)
Regulatory liabilities, deferred income, and other	$ (5,191)	(4,986)
Indirect Ownership Interest \| Cogentrix Co-Investment Fund, LP \| Gas & NGL Marketing Services
Variable Interest Entity [Line Items]
Equity Method Investment, Ownership Percentage	10.00%
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 494	53
Receivables, Net, Current	224	155
Inventories	9	6
Other current assets and deferred charges	8	5
Property, plant, and equipment – net	8,919	4,412
Intangible assets – net	1,749	1,831
Regulatory assets, deferred charges, and other	52	23
Accounts payable	(963)	(56)
Other current liabilities	(28)	(19)
Regulatory liabilities, deferred income, and other	$ (203)	$ (78)
Variable Interest Entity, Primary Beneficiary [Member] \| Williams Companies Inc [Member] \| Northeast JV [Member] \| Northeast G & P [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity Ownership Percentage	65.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Williams Companies Inc [Member] \| Cardinal Gas Services LLC [Member] \| Northeast G & P [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity Ownership Percentage	66.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Williams Companies Inc [Member] \| Driftwood Pipeline LLC
Variable Interest Entity [Line Items]
Variable Interest Entity Ownership Percentage	80.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Williams Companies Inc [Member] \| Pantheon \| Transmission, Power & Gulf [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity Ownership Percentage	51.00%
Variable Interest Entity, Not Primary Beneficiary [Member] \| Indirect Ownership Interest \| Cogentrix Co-Investment Fund, LP \| Gas & NGL Marketing Services
Variable Interest Entity [Line Items]
Equity Method Investment, Ownership Percentage	10.00%
Variable Interest Entity, Not Primary Beneficiary [Member] \| Williams Companies Inc [Member]
Variable Interest Entity [Line Items]
Equity-method investments	$ 630
Variable Interest Entity, Not Primary Beneficiary [Member] \| Williams Companies Inc [Member] \| Louisiana LNG LLC
Variable Interest Entity [Line Items]
Variable Interest Entity Ownership Percentage	10.00%
Equity-method investments	$ 330
Variable Interest Entity, Not Primary Beneficiary [Member] \| Williams Companies Inc [Member] \| Cogentrix Co-Investment Fund, LP \| Gas & NGL Marketing Services
Variable Interest Entity [Line Items]
Equity-method investments	$ 261

Fair Value Measurements and Guarantees (Tables)

9 Months Ended

Sep. 30, 2026

Fair Value Disclosures [Abstract]

Fair Value Assets and Liabilities Measured On Recurring Basis [Table Text Block]


					Fair Value Measurements Using
	Carrying Amount		Fair Value		Quoted Prices In Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Millions)
Assets (liabilities) at September 30, 2026:
Measured on a recurring basis:
ARO Trust - Transco	$	320	$	320	$	320	$	—	$	—
Commodity derivative assets (1)	262		639		383		149		107
Commodity derivative liabilities (1)	(301)		(898)		(525)		(287)		(86)
Equity securities	125		125		125		—		—


Additional disclosures:


Guarantees	(34)		(26)		—		(10)		(16)
Debt by issuer, including current portion:
Williams	(26,034)		(24,381)		—		(24,381)		—
Transco	(5,874)		(5,464)		—		(5,464)		—
NWP	(749)		(747)		—		(747)		—
MountainWest	(380)		(365)		—		(365)		—
NG3 (see Note 3)	(897)		(896)		—		(896)		—
Total debt	(33,934)		(31,853)		—		(31,853)		—

Assets (liabilities) at December 31, 2025:
Measured on a recurring basis:
ARO Trust - Transco	$	356	$	356	$	356	$	—	$	—
Commodity derivative assets (1)	336		722		431		158		133
Commodity derivative liabilities (1)	(340)		(915)		(497)		(270)		(148)

Additional disclosures:

Guarantees	(35)		(28)		—		(12)		(16)
Debt by issuer, including current portion:
Williams	(21,649)		(21,556)		—		(21,556)		—
Transco	(5,888)		(5,941)		—		(5,941)		—
NWP	(748)		(747)		—		(747)		—
MountainWest	(376)		(385)		—		(385)		—
Total debt	(28,661)		(28,629)		—		(28,629)		—

(1)The carrying amount is presented net of counterparty offsetting arrangements and collateral (see Note 9 – Commodity Derivatives).

Debt Securities, Trading, and Equity Securities, FV-NI

Investments within the ARO Trust were as follows:


	September 30, 2026				December 31, 2025
	Amortized Cost Basis		Fair Value		Amortized Cost Basis		Fair Value
	(Millions)
Money market fund	$	6	$	6	$	34	$	34
U.S. equity funds	39		147		53		169
International equity fund	32		58		32		51
Municipal bond fund	117		109		104		102
Total	$	194	$	320	$	223	$	356

Statement of Changes in Member's Equity (Unaudited) - Transco - USD ($) $ in Millions	Total	Transcontinental Gas Pipe Line Company, LLC [Member]	Transcontinental Gas Pipe Line Company, LLC [Member] Member's Capital	Transcontinental Gas Pipe Line Company, LLC [Member] Retained Earnings
Balance at beginning of period at Dec. 31, 2024			$ 5,088	$ 3,217
Statement [Line Items]
Cash contributions from parent		$ 0	0
Net income	$ 1,884			1,045
Cash distributions to parent		907		(907)
Balance at end of period at Sep. 30, 2025		8,443	5,088	3,355
Balance at beginning of period at Jun. 30, 2025			5,088	3,246
Statement [Line Items]
Cash contributions from parent			0
Net income	647			410
Cash distributions to parent				(301)
Balance at end of period at Sep. 30, 2025		8,443	5,088	3,355
Balance at beginning of period at Dec. 31, 2025		8,391	5,088	3,303
Statement [Line Items]
Cash contributions from parent		(275)	275
Net income	2,392			1,120
Cash distributions to parent		1,032		(1,032)
Balance at end of period at Sep. 30, 2026		8,754	5,363	3,391
Balance at beginning of period at Jun. 30, 2026			5,363	3,358
Statement [Line Items]
Cash contributions from parent			0
Net income	$ 700			369
Cash distributions to parent				(336)
Balance at end of period at Sep. 30, 2026		$ 8,754	$ 5,363	$ 3,391

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Variable Interest Entities

9 Months Ended

Sep. 30, 2026

Variable Interest Entity Disclosures [Abstract]

Variable Interest Entities [Text Block]

Note 2 – Variable Interest Entities

Consolidated VIEs

As of September 30, 2026, Williams consolidated the following VIEs:

Northeast JV

Williams owns a 65 percent interest in the Northeast JV, a subsidiary that is a VIE due to certain voting rights being disproportionate to the obligation to absorb losses and substantially all of the Northeast JV’s activities being performed on Williams’ behalf. Williams is the primary beneficiary because it has the power to direct the activities that most significantly impact the Northeast JV’s economic performance. The Northeast JV provides midstream

services for producers in the Marcellus Shale and Utica Shale regions. Future expansion activity is expected to be funded with capital contributions from Williams and the other equity partner on a proportional basis.

Cardinal

Williams owns a 66 percent interest in Cardinal, a subsidiary that provides gathering services for the Utica Shale region and is a VIE due to certain risks shared with customers. Williams is the primary beneficiary because it has the power to direct the activities that most significantly impact Cardinal’s economic performance. Expansion activity is funded with capital contributions from Williams and the other equity partner on a proportional basis.

Driftwood Pipeline

Williams owns an 80 percent interest in Driftwood Pipeline LLC (Driftwood Pipeline), a subsidiary that is a VIE because completion of the Driftwood Pipeline will require additional subordinated financial support from its equity holders in the form of capital contributions. Williams is the primary beneficiary because it has the power to direct the activities that most significantly impact Driftwood Pipeline’s economic performance. Williams, as the operator of Driftwood Pipeline, is responsible for the construction of Line 200 which will supply gas to Louisiana LNG LLC’s (Louisiana LNG) export facility near Lake Charles, Louisiana. The total remaining cost of the project is expected to be funded with capital contributions from Williams and the other equity partner on a proportional basis.

Pantheon

Williams owns a 51 percent interest in Pantheon, a subsidiary that is a VIE due to certain risks shared with a customer. Additionally, Williams is the primary beneficiary because it has the power to direct the activities that most significantly impact Pantheon’s economic performance (see Note 1 – Description of Business and Basis of Presentation).

Consolidated VIEs Balance Sheet Amounts

The following table presents amounts included in the Consolidated Balance Sheet that are only for the use or obligation of the consolidated VIEs:



	September 30,		December 31,
	2026		2025
	(Millions)
Assets (liabilities):
Cash and cash equivalents	$	494	$	53
Trade accounts and other receivables	224		155
Inventories	9		6
Other current assets and deferred charges	8		5
Property, plant, and equipment – net	8,919		4,412
Intangible assets – net	1,749		1,831
Regulatory assets, deferred charges, and other	52		23
Accounts payable	(963)		(56)
Other current liabilities	(28)		(19)

Regulatory liabilities, deferred income, and other	(203)		(78)

Nonconsolidated VIEs

Williams owns certain equity-method investments that are VIEs because the entities either lack sufficient equity at risk or their equity holders, as a group, lack the power to direct the activities that most significantly impact the entities’ economic performance. Williams’ maximum exposure to loss is limited to the carrying value of these investments (included within Investments in the Consolidated Balance Sheet), which totaled $630 million at

September 30, 2026. Included in this total are Williams’ investments in Louisiana LNG and Cogentrix (discussed below).

Louisiana LNG

Williams owns a 10 percent interest in Louisiana LNG, which is a VIE because completion of the LNG facilities will require additional subordinated financial support from its equity holders in the form of capital contributions. At September 30, 2026, the carrying value of its investment in Louisiana LNG was $330 million. Williams’ maximum exposure to loss is limited to the carrying value of its investment. The total remaining cost of the project is expected to be funded with capital contributions from Williams and the other equity partners on a proportional basis.

Cogentrix

The Cogentrix investment represents an approximate 10 percent indirect interest in 10 natural gas power plants. Williams’ investment is accounted for under the equity-method within the Gas & NGL Marketing Services segment, while the investee is considered an investment company, which requires accounting for its investments at fair value. Williams’ equity earnings from Cogentrix reflect its share of the operating expenses and fair value changes recorded by the investee. The current carrying value reflects the favorable impact to fair value of an announced agreement to sell a significant portion of the underlying power plant assets. The Cogentrix investment is a VIE due primarily to Williams’ limited participation rights to direct Cogentrix’s activities. At September 30, 2026, the carrying value of Williams’ investment in Cogentrix was $261 million. Williams’ maximum exposure to loss is limited to the carrying value of its investment.

Fair Value Measurements Nonrecurring Measurements (Details) - Williams Companies Inc [Member] - Level 2 [Member] - West [Member] $ in Millions	3 Months Ended
	Dec. 31, 2025 USD ($)
Fair Value, Nonrecurring [Member]
Fair Value Assets Measured On Nonrecurring Basis [Abstract]
Long-Lived Asset, Held-for-Sale, Fair Value Disclosure	$ 48
Income Statement Location [Axis]: us-gaap:OtherAssetImpairmentCharges
Fair Value Assets Measured On Nonrecurring Basis [Abstract]
Impairment of Long-Lived Assets to be Disposed of	$ 176

Commodity Derivatives (Tables)

9 Months Ended

Sep. 30, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

At September 30, 2026, the notional volume of the net long (short) positions for Williams’ commodity derivative contracts were as follows:

Commodity

Unit of Measure

Net Long (Short) Position

Index Risk

Natural Gas

MMBtu

1,011,810,669

Central Hub Risk - Henry Hub

Natural Gas

MMBtu

(30,910,653)

Basis Risk

Natural Gas

MMBtu

514,399,483

Central Hub Risk - Mont Belvieu

Natural Gas Liquids

Barrels

(1,320,000)

Basis Risk

Natural Gas Liquids

Barrels

(255,000)

Central Hub Risk - WTI

Crude Oil

Barrels

(405,000)

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location

The fair value of commodity derivatives, which are not designated as hedging instruments for accounting purposes, is reflected as follows:


	September 30, 2026				December 31, 2025
Commodity Derivatives Categories	Assets		(Liabilities)		Assets		(Liabilities)
	(Millions)





Current	$	420	$	(539)	$	494	$	(535)
Noncurrent	219		(359)		228		(380)
Total commodity derivatives	639		(898)		722		(915)
Counterparty and collateral netting offset	(377)		597		(386)		575
Amounts recognized in Williams’ Consolidated Balance Sheet	$	262	$	(301)	$	336	$	(340)

The pre-tax impacts of Williams’ commodity derivatives, which are not designated as hedging instruments for accounting purposes, are reflected as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Millions)
Net gain (loss) from commodity derivatives within Total revenues:

Realized	$	(20)	$	7	$	(201)	$	(21)
Unrealized	22		49		(62)		51
	$	2	$	56	$	(263)	$	30

Net gain (loss) from commodity derivatives within Net processing commodity expenses:
Realized	$	—	$	—	$	(3)	$	(2)
Unrealized	—		2		1		4
	$	—	$	2	$	(2)	$	2
Total net gain (loss) from commodity derivatives	$	2	$	58	$	(265)	$	32

Segment Disclosures Recon from Segment to Consolidated - Assets and Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Segment Reporting [Line Items]
Total assets	$ 70,680		$ 70,680		$ 58,573
Current assets	4,732		4,732		3,244
Other Assets, Noncurrent	1,938		1,938		2,011
Operating Segments [Member] \| Transmission, Power & Gulf [Member]
Segment Reporting [Line Items]
Equity-method investments	575		575		512
Total assets	30,966		30,966		26,515
Segment Reporting, Long-Lived Asset, Expenditure for Addition	2,139	$ 754	5,125	$ 1,781
Operating Segments [Member] \| Northeast G & P [Member]
Segment Reporting [Line Items]
Equity-method investments	3,168		3,168		3,236
Total assets	12,166		12,166		12,533
Segment Reporting, Long-Lived Asset, Expenditure for Addition	28	53	71	166
Operating Segments [Member] \| West [Member]
Segment Reporting [Line Items]
Equity-method investments	428		428		460
Total assets	18,366		18,366		12,398
Segment Reporting, Long-Lived Asset, Expenditure for Addition	5,022	167	5,130	962
Operating Segments [Member] \| Gas & NGL Marketing Services
Segment Reporting [Line Items]
Equity-method investments	261		261		292
Total assets	276		276		317
Segment Reporting, Long-Lived Asset, Expenditure for Addition	0	0	1	1
Operating Segments [Member] \| Reportable Segment, Aggregation before Other Operating Segment
Segment Reporting [Line Items]
Equity-method investments	4,432		4,432		4,500
Total assets	61,774		61,774		$ 51,763
Segment Reporting, Long-Lived Asset, Expenditure for Addition	$ 7,189	$ 974	$ 10,327	$ 2,910

Fair Value Measurements and Guarantees Recurring Measurements and Additional (Details) - USD ($)
$ in Millions

Sep. 30, 2026

Dec. 31, 2025

Energy Related Derivative

Measured on a recurring basis

Derivative Asset

$ 262

$ 336

Derivative Liability

(301)

(340)

Carrying Amount [Member]

Additional disclosures:

Guarantees

(34)

(35)

Long-term debt, including current portion

(33,934)

(28,661)

Carrying Amount [Member] | Williams Companies Inc [Member]

Additional disclosures:

Long-term debt, including current portion

(26,034)

(21,649)

Carrying Amount [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Additional disclosures:

Long-term debt, including current portion

(5,874)

(5,888)

Carrying Amount [Member] | Northwest Pipeline LLC [Member]

Additional disclosures:

Long-term debt, including current portion

(749)

(748)

Carrying Amount [Member] | MountainWest [Member]

Additional disclosures:

Long-term debt, including current portion

(380)

(376)

Carrying Amount [Member] | NG3 [Member]

Additional disclosures:

Long-term debt, including current portion

(897)

Fair Value [Member]

Additional disclosures:

Guarantees

(26)

(28)

Long-term debt, including current portion

(31,853)

(28,629)

Fair Value [Member] | Williams Companies Inc [Member]

Additional disclosures:

Long-term debt, including current portion

(24,381)

(21,556)

Fair Value [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Additional disclosures:

Long-term debt, including current portion

(5,464)

(5,941)

Fair Value [Member] | Northwest Pipeline LLC [Member]

Additional disclosures:

Long-term debt, including current portion

(747)

Fair Value [Member] | MountainWest [Member]

Additional disclosures:

Long-term debt, including current portion

(365)

(385)

Fair Value [Member] | NG3 [Member]

Additional disclosures:

Long-term debt, including current portion

(896)

Level 1 [Member]

Additional disclosures:

Guarantees

Long-term debt, including current portion

Level 1 [Member] | Williams Companies Inc [Member]

Additional disclosures:

Long-term debt, including current portion

Level 1 [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Additional disclosures:

Long-term debt, including current portion

Level 1 [Member] | Northwest Pipeline LLC [Member]

Additional disclosures:

Long-term debt, including current portion

Level 1 [Member] | MountainWest [Member]

Additional disclosures:

Long-term debt, including current portion

Level 1 [Member] | NG3 [Member]

Additional disclosures:

Long-term debt, including current portion

Level 2 [Member]

Additional disclosures:

Guarantees

(10)

(12)

Long-term debt, including current portion

(31,853)

(28,629)

Level 2 [Member] | Williams Companies Inc [Member]

Additional disclosures:

Long-term debt, including current portion

(24,381)

(21,556)

Level 2 [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Additional disclosures:

Long-term debt, including current portion

(5,464)

(5,941)

Level 2 [Member] | Northwest Pipeline LLC [Member]

Additional disclosures:

Long-term debt, including current portion

(747)

Level 2 [Member] | MountainWest [Member]

Additional disclosures:

Long-term debt, including current portion

(365)

(385)

Level 2 [Member] | NG3 [Member]

Additional disclosures:

Long-term debt, including current portion

(896)

Level 3 [Member]

Additional disclosures:

Guarantees

(16)

Long-term debt, including current portion

Level 3 [Member] | Williams Companies Inc [Member]

Additional disclosures:

Long-term debt, including current portion

Level 3 [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Additional disclosures:

Long-term debt, including current portion

Level 3 [Member] | Northwest Pipeline LLC [Member]

Additional disclosures:

Long-term debt, including current portion

Level 3 [Member] | MountainWest [Member]

Additional disclosures:

Long-term debt, including current portion

Level 3 [Member] | NG3 [Member]

Additional disclosures:

Long-term debt, including current portion

Fair Value, Recurring [Member] | Carrying Amount [Member]

Measured on a recurring basis

Equity Securities

125

Fair Value, Recurring [Member] | Carrying Amount [Member] | Energy Related Derivative

Measured on a recurring basis

Derivative Asset

^[1]

262

336

Derivative Liability

^[1]

(301)

(340)

Fair Value, Recurring [Member] | Carrying Amount [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Measured on a recurring basis

ARO Trust investments

320

356

Fair Value, Recurring [Member] | Fair Value [Member]

Measured on a recurring basis

Derivative Asset, Fair Value, Gross Asset

639

722

Derivative Liability, Fair Value, Gross Liability

(898)

(915)

Equity Securities

125

Fair Value, Recurring [Member] | Fair Value [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Measured on a recurring basis

ARO Trust investments

320

356

Fair Value, Recurring [Member] | Level 1 [Member]

Measured on a recurring basis

Derivative Asset, Fair Value, Gross Asset

383

431

Derivative Liability, Fair Value, Gross Liability

(525)

(497)

Equity Securities

125

Fair Value, Recurring [Member] | Level 1 [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Measured on a recurring basis

ARO Trust investments

320

356

Fair Value, Recurring [Member] | Level 2 [Member]

Measured on a recurring basis

Derivative Asset, Fair Value, Gross Asset

149

158

Derivative Liability, Fair Value, Gross Liability

(287)

(270)

Equity Securities

Fair Value, Recurring [Member] | Level 2 [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Measured on a recurring basis

ARO Trust investments

Fair Value, Recurring [Member] | Level 3 [Member]

Measured on a recurring basis

Derivative Asset, Fair Value, Gross Asset

107

133

Derivative Liability, Fair Value, Gross Liability

(86)

(148)

Equity Securities

Fair Value, Recurring [Member] | Level 3 [Member] | Transcontinental Gas Pipe Line Company, LLC [Member]

Measured on a recurring basis

ARO Trust investments

$ 0

Wiltel Guarantee [Member]

Additional disclosures:

Guarantor Obligations, Maximum Exposure, Undiscounted

Indemnification Agreement [Member] | Carrying Amount [Member]

Additional disclosures:

Guarantees

$ 0

[1]	The carrying amount is presented net of counterparty offsetting arrangements and collateral (see Note 9 – Commodity Derivatives)

Statement of Cash Flows (Unaudited) - Transco - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
OPERATING ACTIVITIES:
Net income (loss)	$ 2,555	$ 1,995
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation, depletion, and amortization	1,796	1,754
Cash provided (used) by changes in current assets and liabilities:
Inventories	(18)	(66)
Other current assets and deferred charges	(40)	(43)
Other current liabilities	(196)	95
Other, including changes in noncurrent assets and liabilities	(87)	(128)
Net cash provided (used) by operating activities	4,484	4,322
FINANCING ACTIVITIES:
Proceeds from other financing obligations	5,538	2,994
Payments on other financing obligations	(1,137)	(1,733)
Payments for debt issuance costs	(51)	(29)
Net cash provided (used) by financing activities	5,207	(1,110)
INVESTING ACTIVITIES:
Capital expenditures (1)	(5,682)	(2,938)
Net cash provided (used) by investing activities	(7,998)	(3,202)
Increase (decrease) in cash and cash equivalents	1,693	10
Cash and cash equivalents at beginning of year	63	60
Cash and cash equivalents at end of period	1,756	70
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
(1) Increases to property, plant, and equipment, exclusive of equity AFUDC	(6,013)	(3,079)
Capital expenditures	(5,682)	(2,938)
Transcontinental Gas Pipe Line Company, LLC [Member]
OPERATING ACTIVITIES:
Net income (loss)	1,120	1,045
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation, depletion, and amortization	438	426
Allowance for equity funds used during construction (equity AFUDC)	(41)	(21)
Cash provided (used) by changes in current assets and liabilities:
Affiliate receivables	(3)	17
Trade and other accounts receivable	40	(28)
Inventories	(10)	(6)
Regulatory assets	(20)	(47)
Other current assets and deferred charges	(15)	5
Trade accounts payable	(14)	6
Affiliate payables	(1)	(7)
Reserve for rate refunds (Note 10)	(179)	123
Other current liabilities	(20)	51
Other, including changes in noncurrent assets and liabilities	0	(34)
Net cash provided (used) by operating activities	1,295	1,530
FINANCING ACTIVITIES:
Payments on other financing obligations	(8)	0
Payments for debt issuance costs	(2)	0
Cash distributions to parent	(1,032)	(907)
Cash contributions from parent	275	0
Net cash provided (used) by financing activities	(772)	(931)
INVESTING ACTIVITIES:
Capital expenditures (1)	(993)	(663)
Contributions and advances for construction costs	52	25
Dispositions – net	(62)	(82)
Advances to affiliate – net	428	140
Purchase of asset retirement obligations trust investments	(33)	(45)
Proceeds from sale of asset retirement obligations trust investments	85	26
Net cash provided (used) by investing activities	(523)	(599)
Increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of year	0	0
Cash and cash equivalents at end of period	0	0
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
(1) Increases to property, plant, and equipment, exclusive of equity AFUDC	(1,069)	(619)
Changes in related accounts payable and accrued liabilities	76	(44)
Capital expenditures	(993)	(663)
Transcontinental Gas Pipe Line Company, LLC [Member] \| Other Financing Obligations
FINANCING ACTIVITIES:
Proceeds from other financing obligations	23	2
Payments on other financing obligations	$ (28)	$ (26)

Contingencies and Commitments (Details) - USD ($) $ in Millions	1 Months Ended		9 Months Ended
	May 31, 2026	Apr. 30, 2026	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Loss Contingencies [Line Items]
Accrued environmental loss liabilities			$ 38
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]			Other Liabilities and Deferred Revenue, Noncurrent, Other current liabilities
Other current liabilities			$ 1,545		$ 1,639
Transcontinental Gas Pipe Line Company, LLC [Member]
Loss Contingencies [Line Items]
Deferred Revenue, Refund Payments		$ 221
Regulatory Assets, Current			146		126
Other current liabilities			209		143
Transcontinental Gas Pipe Line Company, LLC [Member] \| Environmental Restoration Costs
Loss Contingencies [Line Items]
Accrued environmental loss liabilities			$ 10
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]			Other current liabilities, Other Liabilities, Noncurrent
Transcontinental Gas Pipe Line Company, LLC [Member] \| Potentially Responsible Party At Various Superfund And State Waste Disposal Sites \| Maximum [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Gross			$ 1
Northwest Pipeline LLC [Member]
Loss Contingencies [Line Items]
Regulatory Assets, Current			5		3
Other current liabilities			61		32
Northwest Pipeline LLC [Member] \| Environmental Restoration Costs
Loss Contingencies [Line Items]
Accrued environmental loss liabilities			$ 1
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]			Other current liabilities, Other Liabilities, Noncurrent
Northwest Pipeline LLC [Member] \| Washington State Climate Commitment Act
Loss Contingencies [Line Items]
Regulatory Assets, Current			$ 89		72
Other current liabilities			1		$ 6
Interest Income, Other			4	$ 4
Capital Addition Purchase Commitments [Member]
Loss Contingencies [Line Items]
Commitments for construction and acquisition of property, plant, and equipment			5,900
Gas Pipeline [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities			11
Unrecorded Estimated Recoveries For Environmental Loss Contingencies			3
Natural Gas Underground Storage Facilities [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities			8
Former Operations [Member]
Loss Contingencies [Line Items]
Accrued environmental loss liabilities			$ 19
Construction Project \| Transcontinental Gas Pipe Line Company, LLC [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party	$ 22

Contingencies and Commitments	9 Months Ended
Contingencies and Commitments	Sep. 30, 2026
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Commitments [Text Block]	Note 10 – Contingencies and Commitments Royalty Matters Certain customers, including Expand Energy Corporation (formerly Chesapeake Energy Corporation or Chesapeake), have been named in various lawsuits alleging underpayment of royalties and claiming, among other things, violations of anti-trust laws and the Racketeer Influenced and Corrupt Organizations Act. Williams has also been named as a defendant in certain of these cases filed in Pennsylvania based on allegations that Williams improperly participated with Chesapeake in causing the alleged royalty underpayments. Williams believes that the claims asserted are subject to indemnity obligations owed to Williams by Chesapeake, which obligations survived Chesapeake’s bankruptcy proceedings. Prior to its bankruptcy, Chesapeake reached a settlement to resolve substantially all Pennsylvania royalty cases pending. During the pendency of the bankruptcy, that settlement was renegotiated. The settlement applied to both Chesapeake and Williams and did not require any contribution from Williams. On August 23, 2021, after referral to the United States District Court for the Southern District of Texas by the bankruptcy court, the court approved the settlement. Two objectors filed an appeal with the United States Court of Appeals for the Fifth Circuit. On June 8, 2023, the Court of Appeals vacated the settlement approval and remanded to the United States District Court for the Southern District of Texas with instructions to dismiss the settlement proceedings for lack of jurisdiction. On August 31, 2023, the bankruptcy court entered an order finding the settlement agreements to be null and void. Certain plaintiffs filed a notice of dismissal of their claims against Chesapeake that arose prior to February 8, 2021, in the United States District Court for the Middle District of Pennsylvania lawsuits. The notice stated that plaintiffs are not releasing their claims against the other defendants, including Williams, or claims against Chesapeake that arose after February 9, 2021. Chesapeake has been dismissed from the lawsuits. In September 2026, Williams settled one of the Pennsylvania cases and does not consider the remaining matter to be significant. Williams continues to believe the remaining claim against Williams is subject to indemnity obligations owed to Williams by Chesapeake. Rate Matters On August 30, 2024, Transco filed a general rate case with the FERC for an overall increase in rates and to comply with the terms of the settlement of its prior rate case. On September 30, 2024, the FERC issued an order accepting and suspending Transco’s general rate filing to be effective March 1, 2025, subject to refund and the outcome of hearing procedures established by the FERC. The order also accepted rate decreases for certain services to be effective as of October 1, 2024. During the third quarter of 2025, Transco reached an agreement in principle with its customers and the other participants to settle all aspects of the rate case and accrued a related liability for rate refunds. Transco filed with the FERC in October 2025 for approval of the settlement. On December 30, 2025, the FERC approved the settlement which became effective March 1, 2026. A total net amount of $221 million was refunded in April 2026. Construction Litigation In February 2025, Transco received an adverse judgment related to litigation in the United States Bankruptcy Court for the District of Delaware involving a contractor that performed construction services for Transco’s Atlantic Sunrise project, which was completed in 2018. The total judgment award included amounts for unpaid invoices, interest, and attorney fees. During the fourth quarter of 2025, Transco reached an agreement in principle with the contractor to settle all aspects of the case. Transco accrued a related liability, capitalizing the amount of the settlement in principle. On March 27, 2026, the court approved the settlement and on April 14, 2026, the settlement was paid. Transco recovered $22 million of the settlement amount paid from the co-owner of the project in May 2026. Environmental Matters The U.S. Environmental Protection Agency (EPA), other federal agencies, and various state regulatory agencies routinely propose and promulgate new rules, issue updated guidance to rules, or revise existing rules. These rulemakings include, but are not limited to, reviews and updates to the National Ambient Air Quality Standards, and promulgation of rules for new and existing source performance standards for certain equipment emitting volatile organic compounds and methane as well as limitations on emissions of greenhouse gas compounds. Regulatory changes are continuously monitored including how they may impact operations. Implementation of new or revised regulations may result in impacts to operations and increase the cost of additions to Property, plant, and equipment – net for both new and existing facilities in affected areas; however, due to regulatory uncertainty on final rule content or guidance and applicability timeframes, the cost of these regulatory impacts is not known at this time. Williams Williams is a participant in certain environmental activities in various stages including assessment studies, cleanup operations, and/or remedial processes at certain sites, some of which Williams currently does not own. Williams is monitoring these sites in a coordinated effort with other potentially responsible parties, the EPA, or other governmental authorities. Williams is jointly and severally liable along with unrelated third parties in some of these activities and solely responsible in others. Certain of Williams’ subsidiaries have been identified as potentially responsible parties at various Superfund and state waste disposal sites. In addition, these subsidiaries have incurred, or are alleged to have incurred, various other hazardous materials removal or remediation obligations under environmental laws. At September 30, 2026, Williams has accrued liabilities totaling $38 million for these matters, as discussed below. Estimates of the most likely costs of cleanup are generally based on completed assessment studies, preliminary results of studies, or Williams’ experience with other similar cleanup operations. At September 30, 2026, certain assessment studies were still in process for which the ultimate outcome may yield different estimates of most likely costs. Therefore, the actual costs incurred will depend on the final amount, type, and extent of contamination discovered at these sites, the final cleanup standards mandated by the EPA or other governmental authorities, and other factors. Continuing operations Williams’ interstate gas pipelines are involved in remediation and monitoring activities related to certain facilities and locations for polychlorinated biphenyls (PCBs), mercury, and other hazardous substances. These activities have involved the EPA and various state environmental authorities, resulting in Williams’ identification as a potentially responsible party (PRP) at various Superfund waste sites. At September 30, 2026, Williams has accrued liabilities of $11 million (see Transco and NWP below) for these costs and expects to recover approximately $3 million through rates. Williams also accrues environmental remediation costs for natural gas underground storage facilities, primarily related to soil and groundwater contamination. At September 30, 2026, Williams has accrued liabilities totaling $8 million for these costs. Former operations Williams has potential obligations in connection with assets and businesses it no longer operates. These potential obligations include remediation activities at the direction of federal and state environmental authorities and the indemnification of the purchasers of certain of these assets and businesses for environmental and other liabilities existing at the time the sale was consummated. At September 30, 2026, Williams has accrued environmental liabilities of $19 million related to these matters. Transco Transco has had studies underway for many years to test some of its facilities for the presence of toxic and hazardous substances such as PCBs and mercury to determine to what extent, if any, remediation may be necessary. Transco has also similarly evaluated past on-site disposal of hydrocarbons at a number of its facilities. Transco has worked closely with and responded to data requests from the EPA and state agencies regarding such potential contamination of certain of its sites. Transco is conducting environmental assessments and implementing a variety of remedial measures that may result in increases or decreases in the total estimated costs. Transco also has a program for monitoring certain environmental activities at its Eminence storage facility. At September 30, 2026, Transco has accrued liabilities of approximately $10 million for the expected ongoing remediation and monitoring costs. Transco has been identified as a PRP at various Superfund and state waste disposal sites. Based on present volumetric estimates and other factors, its estimated aggregate exposure for remediation of these sites is less than $1 million. The estimated remediation costs for all of these sites are included in the environmental liabilities discussed above. Liability under the Comprehensive Environmental Response, Compensation and Liability Act and applicable state law can be joint and several with other PRPs. Although volumetric allocation is a factor in assessing liability, it is not necessarily determinative; thus, the ultimate liability could be substantially greater than the amounts described above. Transco considers prudently incurred environmental assessment and remediation costs and the costs associated with compliance with environmental standards to be recoverable through rates. Historically, with limited exceptions, it has been permitted recovery of environmental costs, and it is Transco’s intent to continue seeking recovery of such costs through future rate filings. NWP Beginning in the mid-1980s, NWP evaluated many of its facilities for the presence of toxic and hazardous substances to determine to what extent, if any, remediation might be necessary. NWP identified PCB contamination in air compressor systems, soils, and related properties at certain compressor station sites. Similarly, it identified hydrocarbon impacts at these facilities due to the former use of earthen pits, lubricating oil leaks or spills, and excess pipe coating released to the environment. In addition, heavy metals have been identified at these sites due to the former use of mercury containing meters and paint and welding rods containing lead, cadmium, and arsenic. The PCBs were remediated pursuant to a Consent Decree with the EPA in the late 1980s, and NWP conducted a voluntary clean-up of the hydrocarbon and mercury impacts in the early 1990s. In 2005, the Washington Department of Ecology required NWP to re-evaluate previous clean-ups in Washington. During 2006 to 2015, 129 meter stations were evaluated, of which 82 required remediation. As of September 30, 2026, six meter stations are still being evaluated. During 2006 to 2018, 14 compressor stations were evaluated, of which 11 required remediation. As of September 30, 2026, four compressor stations are still being remediated. NWP had accrued liabilities totaling approximately $1 million at September 30, 2026, for the ongoing remediation. NWP is conducting environmental assessments and implementing a variety of remedial measures that may result in increases or decreases in the total estimated costs. Environmental expenditures are expensed or capitalized depending on their future economic benefit and potential for rate recovery. NWP believes that, with respect to any expenditures required to meet applicable standards and regulations, the FERC would grant the requisite rate relief so that substantially all of such expenditures would be permitted to be recovered through rates. Washington State Climate Commitment Act In 2021, the state of Washington passed its Climate Commitment Act establishing a market-based cap-and-invest program to reduce carbon emissions. This program took effect on January 1, 2023, and sets a limit, or cap, on overall carbon emissions in the state and requires businesses like NWP to obtain allowances equal to its annual covered carbon emissions. The state’s cap will be reduced over time to meet the state’s carbon emissions reduction targets, which means fewer carbon emissions allowances will be available to purchase each year. These allowances can be purchased through quarterly auctions hosted by the state or bought and sold on a secondary market. In 2023, NWP began purchasing allowances for the carbon emissions from nine of its thirteen compressor stations within the state whose annual carbon emissions have exceeded 25,000 metric tons of carbon dioxide equivalent at least once since 2015. Additionally, NWP has program obligations as a natural gas supplier and began purchasing allowances for NWP’s delivery of natural gas to certain of its customers and certain of its facilities in the state whose annual carbon emissions are insufficient to require its direct participation in the program. NWP’s latest rate case settlement allows it to recover the costs of purchasing allowances under the program in its next rate case. At September 30, 2026 and December 31, 2025, totals of $89 million and $72 million, respectively, were included in Regulatory assets and were comprised of the cost of the purchased allowances held, the estimated difference between the allowances held and the allowances required, and the interest income component of the regulatory asset. At September 30, 2026 and December 31, 2025, $1 million and $6 million respectively, were recorded in Other current liabilities as the estimated difference. Interest income of $4 million for the nine months ended September 30, 2026 and 2025, were reflected in Other income (expense) – net. Other Divestiture Indemnifications Pursuant to various purchase and sale agreements relating to divested businesses and assets, Williams has indemnified certain purchasers against liabilities that they may incur with respect to the businesses and assets acquired. The indemnities provided to the purchasers are customary in sale transactions and are contingent upon the purchasers incurring liabilities that are not otherwise recoverable from third parties. At September 30, 2026, other than as previously disclosed, Williams is not aware of any material claims against it involving the above-described indemnities. Any claim for indemnity brought against Williams in the future may have a material adverse effect on Williams’ results of operations in the period in which the claim is made. In addition to the foregoing, various other proceedings are pending against Williams that are incidental to its operations, none of which are expected to be material to Williams’ expected future annual results of operations, liquidity, and financial position. Summary Williams, Transco, and NWP have disclosed estimated ranges of reasonably possible losses for certain matters above, as well as all significant matters for which they are unable to reasonably estimate a range of possible loss. Williams, Transco, and NWP estimate that for all other matters for which they are able to reasonably estimate a range of loss, the aggregate reasonably possible losses beyond amounts accrued are immaterial to expected future annual results of operations, liquidity, and financial position. These calculations have been made without consideration of any potential recovery from third parties. Commitments Commitments for construction and acquisition of property, plant, and equipment for Williams are approximately $5.9 billion at September 30, 2026. A significant portion of the Williams commitment relates to acquisition of long-lead time equipment for power projects, which are backed by reimbursement from the power project customer if the equipment order is cancelled.

Commodity Derivatives

9 Months Ended

Sep. 30, 2026

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Commodity Derivatives [Text Block]

Note 9 – Commodity Derivatives

Williams is exposed to commodity price risk and utilizes derivatives to manage a portion of that risk. Williams reports the fair value of commodity derivatives in Derivative assets; Regulatory assets, deferred charges, and other; Derivative liabilities; or Regulatory liabilities, deferred income, and other. The asset and liability derivative positions are netted by counterparty as permitted under the terms of the master netting arrangements and are also presented net of cash held on deposit in margin accounts that Williams has received or remitted to collateralize certain derivative positions. See Note 8 – Fair Value Measurements and Guarantees for additional fair value

information. In Williams’ Consolidated Statement of Cash Flows, any cash impacts of settled commodity derivatives are recorded as operating activities.

Williams experiences significant earnings volatility from the fair value accounting required for the derivatives used to hedge a portion of the economic value of the underlying transportation and storage capacity portfolios as well as upstream-related production. However, the unrealized fair value measurement gains and losses on the derivatives are generally offset by valuation changes in the economic value of the underlying production or transportation and storage capacity contracts, which are not recognized until the underlying transaction occurs.

Volumes

At September 30, 2026, the notional volume of the net long (short) positions for Williams’ commodity derivative contracts were as follows:

Commodity

Unit of Measure

Net Long (Short) Position

Index Risk

Natural Gas

MMBtu

1,011,810,669

Central Hub Risk - Henry Hub

Natural Gas

MMBtu

(30,910,653)

Basis Risk

Natural Gas

MMBtu

514,399,483

Central Hub Risk - Mont Belvieu

Natural Gas Liquids

Barrels

(1,320,000)

Basis Risk

Natural Gas Liquids

Barrels

(255,000)

Central Hub Risk - WTI

Crude Oil

Barrels

(405,000)

Financial Statement Presentation

The fair value of commodity derivatives, which are not designated as hedging instruments for accounting purposes, is reflected as follows:


	September 30, 2026				December 31, 2025
Commodity Derivatives Categories	Assets		(Liabilities)		Assets		(Liabilities)
	(Millions)





Current	$	420	$	(539)	$	494	$	(535)
Noncurrent	219		(359)		228		(380)
Total commodity derivatives	639		(898)		722		(915)
Counterparty and collateral netting offset	(377)		597		(386)		575
Amounts recognized in Williams’ Consolidated Balance Sheet	$	262	$	(301)	$	336	$	(340)

The pre-tax impacts of Williams’ commodity derivatives, which are not designated as hedging instruments for accounting purposes, are reflected as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2026		2025		2026		2025
	(Millions)
Net gain (loss) from commodity derivatives within Total revenues:

Realized	$	(20)	$	7	$	(201)	$	(21)
Unrealized	22		49		(62)		51
	$	2	$	56	$	(263)	$	30

Net gain (loss) from commodity derivatives within Net processing commodity expenses:
Realized	$	—	$	—	$	(3)	$	(2)
Unrealized	—		2		1		4
	$	—	$	2	$	(2)	$	2
Total net gain (loss) from commodity derivatives	$	2	$	58	$	(265)	$	32

Contingent Features

Generally, collateral may be provided in the form of a parent guaranty, letter of credit, or cash. If collateral is required, fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral are offset against fair value amounts recognized for derivatives executed with the same counterparty.

Williams has specific trade and credit contracts that contain minimum credit rating requirements. These credit rating requirements typically give counterparties the right to suspend or terminate credit if Williams’ credit ratings are downgraded to non-investment grade status. Under such circumstances, Williams would need to post collateral to continue transacting business with these counterparties. At September 30, 2026, the contractually required collateral in the event of a credit rating downgrade to non-investment grade status was $69 million.

Williams maintains accounts with brokers or the clearing houses of certain exchanges to facilitate financial derivative transactions. Based on the value of the positions in these accounts and the associated margin requirements, Williams may be required to deposit cash into these accounts. At September 30, 2026 and December 31, 2025, net cash collateral held on deposit in broker margin accounts was $220 million and $189 million, respectively.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 182
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-182

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 184
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-184

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 185
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-185

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (a)(5)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4H
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4H
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 15
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480960/815-15-50-3

Reference 16: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 183
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-183

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4K
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4K

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4I
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4I

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-2

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-2

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/815/tableOfContent

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5C

+ Details

Revenue Recognition Remaining Performance Obligations (Details) $ in Millions	Sep. 30, 2026 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 32,541
Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	21,030
Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	4,008
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	1,202
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	761
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	105
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	4,720
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	2,934
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	419
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	4,239
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	2,655
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	399
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	3,773
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	2,370
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	373
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	3,034
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	1,843
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	367
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	15,573
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	10,467
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 2,345
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Remaining Performance Obligations [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01 \| Northwest Pipeline LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period

Revenue Recognition Contract Liabilities Performance Obligations (Details) - USD ($) $ in Millions	Sep. 30, 2026	Jun. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	$ 948	$ 932	$ 948	$ 1,004	$ 1,054	$ 1,046
Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	155	$ 157	$ 163	$ 165	$ 168	$ 173
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	57
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	174
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	11
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	138
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	11
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	110
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	10
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	75
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	10
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	394
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with Customer, Liability	$ 110
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-10-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Performance Obligations Related To Contract Liabilities [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2031-01-01 \| Transcontinental Gas Pipe Line Company, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period