Impairment of Contract Asset (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Oct. 04, 2022	Dec. 31, 2021	Mar. 31, 2020
Noncontrolling Interest [Line Items]
Cash payment option value for contract asset		$ 196,000
Contract asset	$ 29,250	29,000		$ 29,250			$ 410,000	$ 410,000
Impairment of contract asset	$ 0	184,900	$ 0	$ 184,945	$ 0
Fair value of contract asset		$ 225,000
Subsequent Event
Noncontrolling Interest [Line Items]
Cash payment option value for contract asset						$ 196,000
Equitrans Midstream
Noncontrolling Interest [Line Items]
Percentage of equity interest sold								50.00%