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Property, Plant and Equipment - Components (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Property, Plant and Equipment [Abstract]    
Intangible Drilling Cost $ 5,395,180 $ 5,247,800
Gas Gathering Equipment 2,512,621 2,483,561
Proved Gas Properties 1,321,653 1,312,706
Gas Wells and Related Equipment 1,260,268 1,202,731
Unproved Gas Properties 735,831 730,400
Surface Land and Other Equipment 193,085 194,655
Other 187,450 190,249
Total Property, Plant and Equipment 11,606,088 11,362,102
Less: Accumulated Depreciation, Depletion and Amortization 4,593,364 4,372,619
Total Property, Plant and Equipment—Net $ 7,012,724 $ 6,989,483