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