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Provision for decommissioning costs (Details 1) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Provision For Decommissioning Costs    
Opening balance $ 18,600 $ 15,619
Adjustment to provision 3,821 3,484
Transfers related to liabilities held for sale (339) (1,258)
Use of provisions (1,227) (854)
Interest accrued 837 476
Others (8) (5)
Translation adjustment 1,519 1,138
Closing balance 23,203 18,600
Current 2,032  
Non-current $ 21,171 $ 18,600