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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Depreciation of plant and equipment is calculated on the straight-line method over their estimated useful lives or lease terms, generally as follows:
Years
Buildings and Improvements
10 to 45
Machinery and Equipment
3 to 25
Gathering and Transmission
30 to 40
Leasehold ImprovementsLife of Lease
December 31,
20232022
Intangible Drilling Cost$5,902,498 $5,554,021 
Gas Gathering Equipment2,631,110 2,542,587 
Gas Wells and Related Equipment1,513,945 1,342,719 
Proved Gas Properties1,374,685 1,345,114 
Unproved Gas Properties724,401 734,890 
Surface Land and Other Equipment187,316 193,153 
Other 203,163 195,214 
Total Property, Plant and Equipment12,537,118 11,907,698 
Less: Accumulated Depreciation, Depletion and Amortization5,194,485 4,811,189 
Total Property, Plant and Equipment - Net$7,342,633 $7,096,509 
Schedule of Amortization Expense Per Unit of Production
December 31,
20232022
Unproved Gas Properties$724,401 $734,890 
Advance Royalties1,597 1,130 
     Total$725,998 $736,020