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Financial and capital risk management (Details 4) - Foreign Exchange And Interest Rate Derivatives [Member] - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]    
Foreign exchange notional amount $ 11,490 $ 6,574
Foreign exchange financial settlement inflows (549) $ 664
Later Than One Year And There After [Member]    
IfrsStatementLineItems [Line Items]    
Foreign exchange financial settlement inflows (147)  
Later Than Two Year And There After [Member]    
IfrsStatementLineItems [Line Items]    
Foreign exchange financial settlement inflows (137)  
Later Than Three Year And There After [Member]    
IfrsStatementLineItems [Line Items]    
Foreign exchange financial settlement inflows $ (265)