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Collateral for crude oil exploration concession agreements (Details Narrative) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Collateral for crude oil exploration concession agreements, amount $ 1,770 $ 1,748
Marlim [Member]    
IfrsStatementLineItems [Line Items]    
Assets pledged as collateral 1,756 1,648
Buzios [Member]    
IfrsStatementLineItems [Line Items]    
Assets pledged as collateral $ 14 $ 100