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Natural Gas and Oil Reserves Information (Unaudited) - Changes in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |
Standardized Measure, Beginning of Year | $ 2,374,630 | $ 12,609,636 | $ 5,775,605
Net change in sales price, net of production costs | (1,478,758) | (14,069,134) | 8,600,315
Development costs incurred during the year which were previously estimated | 452,533 | 1,004,650 | 788,450
Revisions of quantity estimates | (693,905) | (1,583,876) | (42,423)
Accretion of discount | 250,170 | 1,551,704 | 680,010
Changes in future development and abandonment costs | 764,629 | 1,095,844 | (869,115)
Changes in timing and other | 94,058 | (374,087) | (113,744)
Extensions and discoveries | 380,544 | 215,249 | 2,456,124
Acquisitions of minerals in place | 0 | 0 | 604
Sales of minerals in place | (3,542) | 0 | (3,313)
Sales, net of production costs | (664,653) | (855,699) | (2,779,960)
Net changes in income taxes | 122,488 | 2,780,343 | (1,882,917)
Standardized Measure, End of Year | $ 1,598,194 | $ 2,374,630 | $ 12,609,636

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