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Financial and capital risk management (Details 1) - Not Designated As Hedging Instruments [Member] - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities $ 684 $ 262
Foreign Exchange And Interest Rate Risk [Member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities 664 211
Commodity price risk [member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities 22 56
Cdi Tjlp Versus Usd Fixed And Floating Rate Swap [Member] | Foreign Exchange And Interest Rate Risk [Member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities 79 (133)
Ipca Swap [Member] | Foreign Exchange And Interest Rate Risk [Member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities (41) (63)
Dollar Swap [Member] | Foreign Exchange And Interest Rate Risk [Member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities 650 400
Libor Swap [Member] | Foreign Exchange And Interest Rate Risk [Member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities (24) 7
Bunker Oil Gasoil And Brent [Member] | Commodity price risk [member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities 30 22
Energy Transition Materials [Member] | Commodity price risk [member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities (8) 34
Other Options [Member] | Commodity price risk [member]    
IfrsStatementLineItems [Line Items]    
Derivative Financial Assets Liabilities $ (2) $ (5)