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Natural Gas and Oil Reserves Information (Unaudited) - Summary of Changes in Net Quantities of Natural Gas and Crude Oil Reserves (Detail)
 12 Months Ended
Dec. 31, 2024
MMcf
MMBbls
Dec. 31, 2023
MMcf
MMBbls
Dec. 31, 2022
MMcf
MMBbls
Dec. 31, 2021
MMBbls
MMcf
Oil (MBbls)        
Proved Reserves:        
Beginning of period | MMBbls 548 549 627  
Revisions of previous estimates | MMBbls (49) (47) (61)  
Extensions and discoveries | MMBbls 0 116 137  
Acquisitions of minerals in place | MMBbls 0 0 6  
Sales of minerals in place | MMBbls (118) 0 (78)  
Production | MMBbls (50) (70) (82)  
End of period | MMBbls 331 548 549  
Proved Developed Reserves:        
Proved developed reserves | MMBbls 331 548 480 627
Proved Undeveloped Reserves:        
Proved undeveloped reserves | MMBbls 0 0 69 0
Natural Gas (MMcf)        
Proved Reserves:        
Beginning of period | MMcf 4,940,226 6,697,570 6,118,083  
Revisions of previous estimates | MMcf (1,180,157) (1,803,628) (6,870)  
Extensions and discoveries | MMcf 531,258 570,751 1,090,420  
Acquisitions of minerals in place | MMcf 0 0 260  
Sales of minerals in place | MMcf (1,681) 0 (3,707)  
Production | MMcf (527,548) (524,467) (500,616)  
End of period | MMcf 3,762,098 4,940,226 6,697,570  
Proved Developed Reserves:        
Proved developed reserves | MMcf 2,731,812 2,734,175 2,531,462 2,245,660
Proved Undeveloped Reserves:        
Proved undeveloped reserves | MMcf 1,030,286 2,206,051 4,166,108 3,872,423