PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Abstract]
Intangible Drilling Cost	$ 6,850,393	$ 6,755,849
Gas Gathering Equipment	2,777,947	2,771,747
Gas Wells and Related Equipment	1,867,149	1,833,856
Proved Gas Properties	1,459,993	1,457,919
Unproved Gas Properties	775,900	747,528
Surface Land and Other Equipment	179,294	179,676
Other	312,041	310,649
Total Property, Plant and Equipment	14,222,717	14,057,224
Less: Accumulated Depreciation, Depletion and Amortization	6,310,588	6,193,871
Total Property, Plant and Equipment—Net	$ 7,912,129	$ 7,863,353

Drilling Cost

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Gas Gathering Systems, Net

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Other Gas Assets

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Surface Land And Other Equipment

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount, before accumulated depreciation, depletion, amortization, and valuation allowance, of capitalized cost for well and related equipment and facility in oil- and gas-producing activities. Includes, but is not limited to, cost incurred to drill and equip exploratory well and exploratory-type stratigraphic test well that has found proved reserve and cost incurred to obtain access to proved reserve and provide facility for extracting, treating, gathering, and storing oil and gas, including the drilling and equipping of development well, development-type stratigraphic test well, and service well.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount, before accumulated depreciation, depletion, amortization, and impairment, of oil and gas properties with proved reserve accounted for under successful efforts method.

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Amount, before accumulated depreciation, depletion, amortization, and impairment, of oil and gas properties with unproved reserve accounted for under successful efforts method.

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