v3.26.1
Supplementary Oil And Gas Information (Unaudited) - Proved and Proved Developed Natural Gas Reserve Quantities (Details)
 12 Months Ended
Dec. 31, 2025
Bcf
Dec. 31, 2024
Bcf
MMBbls
Dec. 31, 2023
Bcf
Dec. 31, 2022
Bcf
Proved Developed And Undeveloped Reserves [Roll Forward]        
Sales of reserves in place (in MMbbl/Bcf) | MMBbls   2    
Natural Gas        
Proved Developed And Undeveloped Reserves [Roll Forward]        
Proved reserves, net, beginning balance 11,177 13,419 12,246  
Extensions and discoveries (in MMbbl/Bcf) 105 202 1,185  
Improved recovery (in MMbbl/Bcf) 180 152 603  
Purchases of reserves in place (in MMbbl/Bcf) 799 1,090 0  
Sales of reserves in place (in MMbbl/Bcf) 0 44 6  
Production (in MMbbl/Bcf) 903 769 755  
Economic revisions due to prices (in MMbbl/Bcf) 1,667 (3,860) 88  
Revisions of prior estimates (in MMbbl/Bcf) 688 987 58  
Proved reserves, net, ending balance 13,712 11,177 13,419  
Net proved developed reserves (in MMbbl/Bcf) 4,457 3,357 4,040 4,975
Natural Gas | North America        
Proved Developed And Undeveloped Reserves [Roll Forward]        
Proved reserves, net, beginning balance 11,155 13,393 12,217  
Extensions and discoveries (in MMbbl/Bcf) 105 202 1,185  
Improved recovery (in MMbbl/Bcf) 180 152 603  
Purchases of reserves in place (in MMbbl/Bcf) 799 1,090 0  
Sales of reserves in place (in MMbbl/Bcf) 0 44 6  
Production (in MMbbl/Bcf) 900 765 750  
Economic revisions due to prices (in MMbbl/Bcf) 1,667 (3,860) 87  
Revisions of prior estimates (in MMbbl/Bcf) 700 988 57  
Proved reserves, net, ending balance 13,706 11,155 13,393  
Net proved developed reserves (in MMbbl/Bcf) 4,455 3,347 4,029 4,956
Natural Gas | North Sea        
Proved Developed And Undeveloped Reserves [Roll Forward]        
Proved reserves, net, beginning balance 3 3 4  
Extensions and discoveries (in MMbbl/Bcf) 0 0 0  
Improved recovery (in MMbbl/Bcf) 0 0 0  
Purchases of reserves in place (in MMbbl/Bcf) 0 0 0  
Sales of reserves in place (in MMbbl/Bcf) 0 0 0  
Production (in MMbbl/Bcf) 1 1 1  
Economic revisions due to prices (in MMbbl/Bcf) 0 0 0  
Revisions of prior estimates (in MMbbl/Bcf) (2) 1 (1)  
Proved reserves, net, ending balance 0 3 3  
Net proved developed reserves (in MMbbl/Bcf) 0 3 1 1
Natural Gas | Offshore Africa        
Proved Developed And Undeveloped Reserves [Roll Forward]        
Proved reserves, net, beginning balance 18 23 25  
Extensions and discoveries (in MMbbl/Bcf) 0 0 0  
Improved recovery (in MMbbl/Bcf) 0 0 0  
Purchases of reserves in place (in MMbbl/Bcf) 0 0 0  
Sales of reserves in place (in MMbbl/Bcf) 0 0 0  
Production (in MMbbl/Bcf) 2 3 4  
Economic revisions due to prices (in MMbbl/Bcf) 0 0 1  
Revisions of prior estimates (in MMbbl/Bcf) (10) (2) 1  
Proved reserves, net, ending balance 6 18 23  
Net proved developed reserves (in MMbbl/Bcf) 2 7 10 19