v3.26.3
Finance debt (Details 6)
$ in Millions
 6 Months Ended
Jun. 30, 2026
USD ($)
Foreign countries [member]  
IfrsStatementLineItems [Line Items]  
Available (Lines of Credit) $ 5,171
Balance 5,171
Country Of Brazil [Member]  
IfrsStatementLineItems [Line Items]  
Available (Lines of Credit) 2,093
Balance $ 2,093
Syndicate Of Banks [Member] | Foreign countries [member] | Petrobras Global Trading B V [Member]  
IfrsStatementLineItems [Line Items]  
Date 12/16/2021
Maturity 11/16/2028
Available (Lines of Credit) $ 4,111
Balance $ 4,111
Syndicate Of Banks Two [Member] | Foreign countries [member] | Petrobras Global Trading B V [Member]  
IfrsStatementLineItems [Line Items]  
Date 07/08/2025
Maturity 11/16/2028
Available (Lines of Credit) $ 1,060
Balance $ 1,060
Bradesco [Member] | Country Of Brazil [Member] | Petroleo Brasileiro Sa [Member]  
IfrsStatementLineItems [Line Items]  
Date 12/22/2025
Maturity 11/22/2030
Available (Lines of Credit) $ 290
Balance $ 290
Banco Itau [Member] | Country Of Brazil [Member] | Petroleo Brasileiro Sa [Member]  
IfrsStatementLineItems [Line Items]  
Date 07/30/2025
Maturity 07/31/2030
Available (Lines of Credit) $ 290
Balance $ 290
Banco Do Brasil [Member] | Country Of Brazil [Member] | Petroleo Brasileiro Sa [Member]  
IfrsStatementLineItems [Line Items]  
Date 03/23/2018
Maturity 09/26/2030
Available (Lines of Credit) $ 676
Balance $ 676
Banco Do Brasil 1 [Member] | Country Of Brazil [Member] | Petroleo Brasileiro Sa [Member]  
IfrsStatementLineItems [Line Items]  
Date 10/04/2018
Maturity 09/04/2029
Available (Lines of Credit) $ 773
Balance $ 773
Caixa Economica Federal [Member] | Country Of Brazil [Member] | Petroleo Brasileiro Sa [Member]  
IfrsStatementLineItems [Line Items]  
Date 11/23/2010
Available (Lines of Credit) $ 64
Balance $ 64