Impairment of Contract Asset (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2020
Noncontrolling Interest [Line Items]
Cash payment option value for contract asset					$ 196,000		$ 196,000
Contract asset	$ 29,250		$ 29,250		29,000	$ 410,000	$ 410,000
Impairment of contract asset	$ 0	$ 0	$ 184,945	$ 0
Fair value of contract asset					$ 225,000
Equitrans Midstream
Noncontrolling Interest [Line Items]
Percentage of equity interest sold							50.00%