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Taxes (Details Narrative) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
IfrsStatementLineItems [Line Items]      
Uncertain tax treatments $ 5,673   $ 5,229
Other taxes   $ 790  
Enrollment expense amount   $ 2,085  
Petrobras [Member]      
IfrsStatementLineItems [Line Items]      
Uncertain tax treatments 11,927   10,270
IRPJ And CSLL [Member]      
IfrsStatementLineItems [Line Items]      
Uncertain tax treatments 833   767
Other taxes $ 5,420   $ 4,274