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Information by operating segment (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization $ 12,479 $ 13,280 $ 13,218
Operating segments [member] | Exploration And Production [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization 9,292 10,230 10,415
Operating segments [member] | Refining Transportation And Marketing [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization 2,495 2,410 2,248
Operating segments [member] | Gas And Power [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization 557 525 448
Operating segments [member] | Corporate And Other Business [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization $ 135 $ 115 $ 107