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Risk management (Details 14) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets $ 69  
Foreign currency derivatives, liabilities   $ (121)
Recurring fair value measurement [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, liabilities (49)  
Recurring fair value measurement [member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets 1  
Foreign currency derivatives, liabilities   (40)
Recurring fair value measurement [member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets 68  
Foreign currency derivatives, liabilities (49) $ (81)
Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets 1  
Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member] | Level 1 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets 1  
Recurring fair value measurement [member] | Interest Rate Derivatives [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets 68  
Recurring fair value measurement [member] | Interest Rate Derivatives [Member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, assets 68  
Recurring fair value measurement [member] | Foreign Currency Contracts Derivative [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, liabilities (49)  
Recurring fair value measurement [member] | Foreign Currency Contracts Derivative [Member] | Level 2 of fair value hierarchy [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives, liabilities $ (49)