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Provision for decommissioning costs (Details Narrative) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Provision established $ 389 $ 1,072
Urugua Group [Member]    
IfrsStatementLineItems [Line Items]    
Provision established 381  
Pescada Group [Member]    
IfrsStatementLineItems [Line Items]    
Provision established $ 41  
Potiguar Group [Member]    
IfrsStatementLineItems [Line Items]    
Provision established   551
Albacora Leste Field [Member]    
IfrsStatementLineItems [Line Items]    
Provision established   490
Golfinho And Camarupim [Member]    
IfrsStatementLineItems [Line Items]    
Provision established   175
Norte Capixaba [Member]    
IfrsStatementLineItems [Line Items]    
Provision established   $ 44