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Natural Gas and Oil Reserves Information (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Cash Flows Relating to Proved Reserves: |  |  |  |
Future Cash Flows | $ 11,829,623 | $ 40,405,829 | $ 20,396,381 |
Future Costs: |  |  |  |
Production | (4,019,901) | (5,473,650) | (3,954,726) |
Development and Abandonment | (2,285,853) | (4,175,721) | (2,752,603) |
Future Income Taxes | (341,677) | (5,741,914) | (2,065,316) |
Future Net Cash Flows | 5,182,192 | 25,014,544 | 11,623,736 |
10% Discount Factor | (2,807,562) | (12,404,908) | (5,848,131) |
Standardized Measure of Discounted Future Net Cash Flows | $ 2,374,630 | $ 12,609,636 | $ 5,775,605 | $ 1,935,725

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