v3.25.4
Leases - Summary of Right-of-use Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1   $ 26,453
At December 31 $ 26,332  
Impairment losses on right-of-use assets 352 438
Impairment reversals on right-of-use assets   11
Production    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1   5,811
At December 31 5,545  
Manufacturing, supply and distribution    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1   14,433
At December 31 14,686  
Other    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1   6,209
At December 31 6,101  
Cost    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 47,230 44,233
Additions 4,031 7,241
Sales, retirements and other movements (1,667) (3,582)
Currency translation differences 674 (662)
At December 31 50,268 47,230
Cost | Production    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 13,565 12,597
Additions 886 1,669
Sales, retirements and other movements (647) (554)
Currency translation differences 127 (147)
At December 31 13,931 13,565
Cost | Manufacturing, supply and distribution    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 23,738 19,485
Additions 2,097 4,912
Sales, retirements and other movements (1) (565)
Currency translation differences 271 (94)
At December 31 26,105 23,738
Cost | Other    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 9,927 12,151
Additions 1,048 660
Sales, retirements and other movements (1,019) (2,463)
Currency translation differences 276 (421)
At December 31 10,232 9,927
Depreciation, depletion and amortisation, including impairments    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 (20,777) (20,154)
Charge for the year 5,600 5,428
Sales, retirements and other movements 2,666 4,573
Currency translation differences 225 (232)
At December 31 (23,936) (20,777)
Depreciation, depletion and amortisation, including impairments | Production    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 (7,754) (7,146)
Charge for the year 1,552 1,525
Sales, retirements and other movements 1,002 891
Currency translation differences 82 (26)
At December 31 (8,386) (7,754)
Depreciation, depletion and amortisation, including impairments | Manufacturing, supply and distribution    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 (9,305) (8,049)
Charge for the year 2,915 2,837
Sales, retirements and other movements 850 1,552
Currency translation differences 49 (29)
At December 31 (11,419) (9,305)
Depreciation, depletion and amortisation, including impairments | Other    
Disclosure of quantitative information about right-of-use assets [line items]    
At January 1 (3,718) (4,959)
Charge for the year 1,133 1,066
Sales, retirements and other movements 814 2,130
Currency translation differences 94 (177)
At December 31 $ (4,131) $ (3,718)