General, Description of Business, and Basis of Presentation (Details)		6 Months Ended
	Oct. 31, 2020	Jun. 30, 2021
Williams Companies Inc [Member] | Blue Racer Midstream LLC | Beneficial Owner
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest	29.00%
Williams Companies Inc [Member] | Transmission And Gulf Of Mexico [Member] | Gulfstar One [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Variable Interest Entity Ownership Percentage		51.00%
Williams Companies Inc [Member] | Northeast G And P [Member] | Northeast JV [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Variable Interest Entity Ownership Percentage		65.00%
Williams Companies Inc [Member] | Northeast G And P [Member] | Cardinal Gas Services LLC [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Variable Interest Entity Ownership Percentage		66.00%
Williams Companies Inc [Member] | Northeast G And P [Member] | Appalachia Midstream Services, LLC [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		66.00%
Williams Companies Inc [Member] | West [Member] | Conway Fractionator [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest		50.00%
Williams Companies Inc [Member] | West [Member] | Brazos Permian II LLC [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest		15.00%
Gulfstream Natural Gas System, LLC [Member] | Transmission And Gulf Of Mexico [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%
Discovery Producer Services LLC [Member] | Transmission And Gulf Of Mexico [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		60.00%
Laurel Mountain Midstream, LLC [Member] | Northeast G And P [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		69.00%
Caiman Energy II [Member] | Northeast G And P [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	58.00%
Overland Pass Pipeline Company LLC [Member] | West [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%
Rocky Mountain Midstream Holdings LLC [Member] | West [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%
Targa Train 7 LLC | West [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		20.00%
Blue Racer Midstream LLC | Northeast G And P [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		50.00%