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Consortia (partnerships) in E&P activities (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Consortia Partnerships In Ep Activities    
Opening balance $ 407 $ 364
Additions/(Write-offs) on PP&E 17 (7)
Payments made (56)  
Other income and expenses 62 26
Translation adjustments 32 24
Closing balance $ 462 $ 407