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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Detail) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Extractive Industries [Abstract]        
Future cash inflows $ 48,101,796 $ 54,389,915    
Future costs:        
Production (30,097,778) (29,663,691)    
Development [1] (2,742,638) (2,978,183)    
Future net cash flows before income taxes 15,261,380 21,748,041    
Future income tax expense (2,876,562) (4,176,604)    
Total future net cash flows before 10% discount 12,384,818 17,571,437    
10% annual discount (7,693,744) (10,732,951)    
Standardized measure of discounted future net cash flows $ 4,691,074 $ 6,838,486 $ 24,545,283 $ 12,485,226
[1]

(a)

2024 includes $413.3 million of undiscounted future asset retirement costs as of December 31, 2024, using current estimates of future abandonment costs.