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Property, Plant and Equipment - Components (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Property, Plant and Equipment [Abstract] |  |
Intangible Drilling Cost | $ 5,749,646 | $ 5,554,021
Gas Gathering Equipment | 2,576,681 | 2,542,587
Gas Wells and Related Equipment | 1,440,999 | 1,342,719
Proved Gas Properties | 1,368,079 | 1,345,114
Unproved Gas Properties | 720,697 | 734,890
Surface Land and Other Equipment | 191,123 | 193,153
Other | 200,633 | 195,214
Total Property, Plant and Equipment | 12,247,858 | 11,907,698
Less: Accumulated Depreciation, Depletion and Amortization | 5,008,026 | 4,811,189
Total Property, Plant and Equipment—Net | $ 7,239,832 | $ 7,096,509

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