Description of Business and Basis of Presentation (Details)	6 Months Ended
Jun. 30, 2026
Transmission, Power & Gulf [Member] \| Gulfstream Natural Gas System, LLC [Member]
General and Description Of Business [Abstract]
Equity Method Investment, Ownership Percentage	50.00%
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%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: 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 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-5A

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Description Of Business [Abstract]

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