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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Natural gas and oil properties: |  |  |  |
Properties subject to depletion | [1] | $ 10,435,611 | $ 9,855,287 | $ 9,338,236
Unproved properties | [1] | 789,871 | 800,592 | 837,334
Total | [1] | 11,225,482 | 10,655,879 | 10,175,570
Accumulated depreciation, depletion and amortization | [1] | (5,107,801) | (4,765,475) | (4,420,914)
Natural gas and oil properties, successful efforts method, net | [1] | $ 6,117,681 | $ 5,890,404 | $ 5,754,656
[1] | Includes capitalized asset retirement costs and the associated accumulated amortization.

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