Supplemental Gas Data (unaudited) - Capitalized Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Extractive Industries [Abstract]
Intangible Drilling Cost	$ 5,902,498	$ 5,554,021
Gas Gathering Assets	2,631,110	2,542,587
Proved Gas Properties	1,374,685	1,345,114
Unproved Gas Properties	724,401	734,890
Gas Wells and Related Equipment	1,513,945	1,342,719
Other Gas Assets	119,163	99,457
Total Property, Plant and Equipment	12,265,802	11,618,788
Accumulated Depreciation, Depletion and Amortization	(5,110,938)	(4,710,684)
Net Capitalized Costs	$ 7,154,864	$ 6,908,104

Capitalized Costs, Other Gas Assets

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- Definition

Drilling Cost

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- Definition

Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities.

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The sum of capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation.

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Net amount of capitalized costs relating to oil and gas producing activities.

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Capitalized costs incurred for support equipment and facilities used in oil and gas producing activities (such as seismic equipment, drilling equipment, construction and grading equipment, vehicles, repair shops, warehouses, supply points, camps, and division, district, or field offices).

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Capitalized costs which include those incurred to (1) to drill and equip those exploratory wells and exploratory-type stratigraphic test wells that have found proved reserves and (2) obtain access to proved reserves and provide facilities for extracting, treating, gathering, storing the oil and gas, including the drilling and equipping of development wells and development-type stratigraphic wells and service wells.

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- Definition

Oil and Gas properties with proved reserves under the successful effort method.

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Oil and Gas properties with unproved reserves under the successful effort method.

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