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Information by operating segment (Details 1) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization $ 13,280 $ 13,218 $ 11,695
Operating segments [member] | Exploration And Production [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization 10,230 10,415 9,005
Operating segments [member] | Refining Transportation And Marketing [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization 2,410 2,248 2,167
Operating segments [member] | Gas And Power [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization 525 448 430
Operating segments [member] | Corporate And Other Business [Member]      
IfrsStatementLineItems [Line Items]      
Amount of depreciation, depletion and amortization $ 115 $ 107 $ 93