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Risk management (Details 12) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Financial assets, at fair value $ 23  
Foreign currency derivatives   $ (273)
Recurring fair value measurement [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (121)  
Recurring fair value measurement [member] | Foreign Currency Contracts Derivative [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (64)  
Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (40)  
Recurring fair value measurement [member] | Interest Rate Derivatives [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (17)  
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member]    
IfrsStatementLineItems [Line Items]    
Financial assets, at fair value 23  
Foreign currency derivatives (81) $ (272)
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member] | Foreign Currency Contracts Derivative [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (64)  
Level 2 of fair value hierarchy [member] | Recurring fair value measurement [member] | Interest Rate Derivatives [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (17)  
Level 1 of fair value hierarchy [member] | Recurring fair value measurement [member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives (1)  
Level 1 of fair value hierarchy [member] | Recurring fair value measurement [member] | Commodity Derivatives Liabilities [Member]    
IfrsStatementLineItems [Line Items]    
Foreign currency derivatives $ (40)