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Provision for decommissioning costs (Details 1) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Provision For Decommissioning Costs    
Opening balance $ 26,202 $ 23,202
Adjustment to provision 8 74
Transfers related to liabilities held for sale 100 (332)
Use of provisions (721) (694)
Interest accrued 629 516
Others (12) 15
Translation adjustment 3,530 (2,967)
Closing balance $ 29,736 $ 19,814