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Risk management (Details 3)
Dec. 31, 2022
USD ($)
Derivatives [member] | Reasonably Possible Scenario [Member]  
IfrsStatementLineItems [Line Items]  
Risk exposure associated with instruments $ (135,000,000)
Derivatives [member] | Remote Scenario [Member]  
IfrsStatementLineItems [Line Items]  
Risk exposure associated with instruments (269,000,000)
Derivatives Not Designated For Hedge Accounting [member] | Crudeoil And Oil Products Price Changes [Member] | Futures contract [member] | Reasonably Possible Scenario [Member]  
IfrsStatementLineItems [Line Items]  
Risk exposure associated with instruments (135,000,000)
Derivatives Not Designated For Hedge Accounting [member] | Crudeoil And Oil Products Prices Changes [Member] | Futures contract [member] | Remote Scenario [Member]  
IfrsStatementLineItems [Line Items]  
Risk exposure associated with instruments $ (269)