Transactions with Affiliates Related Party Transations (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($) employee	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) employee	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Related Party Transaction [Line Items]
Advances to affiliate		$ 1,911,466		$ 1,911,466		$ 1,669,368
Related party transaction, rate				2.74%
Interest income, related party		10,900		$ 14,400
Operating revenues, related party		25,100	$ 15,400	68,800	$ 20,100
Cost of natural gas sales, related party		$ 7,200	1,400	$ 14,400	5,500
Entity number of employees | employee		0		0
Expenses, related party		$ 88,900	82,100	$ 255,900	237,800
Reduction to operating expenses		2,900	$ 1,900	6,600	5,400
Cash distributions to parent				587,548	$ 287,928
Williams Companies Inc
Related Party Transaction [Line Items]
Advances to affiliate		$ 1,900,000		$ 1,900,000		$ 1,700,000
Subsequent Event
Related Party Transaction [Line Items]
Cash distributions to parent	$ 250,000