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Investments (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 80.00% |  |
Net income for the year | $ 24,995 | $ 36,755 | $ 19,986
Exploration And Production Refining Transportation And Marketing Gas And Power And Distribution Segment [Member] | Petrobras International Braspetro Pibbv [Member] | Country Of Netherlands [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Sales revenues | $ 42,379 |  |
Shareholders'equity (deficit) | 56,131 |  |
Net income for the year | $ 3,410 |  |
Country | Netherlands |  |
Refining Transportation And Marketing Segment [Member] | Petrobras Transporte S A Transpetro [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Sales revenues | $ 2,223 |  |
Shareholders'equity (deficit) | 967 |  |
Net income for the year | $ 93 |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Fabrica Carioca De Catalizadores S A F C C [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 50.00% |  |
Proportion of voting rights held in subsidiary | 50.00% |  |
Sales revenues | $ 64 |  |
Shareholders'equity (deficit) | 57 |  |
Net income for the year | $ 21 |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Logum Logistica S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 30.00% |  |
Proportion of voting rights held in subsidiary | 30.00% |  |
Shareholders'equity (deficit) | $ 216 |  |
Net income for the year | $ (31) |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Petrocoque S A Industria E Comercio [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 50.00% |  |
Proportion of voting rights held in subsidiary | 50.00% |  |
Shareholders'equity (deficit) | $ 20 |  |
Net income for the year | $ 23 |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Refinaria De Petroleo Riograndense S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 33.20% |  |
Proportion of voting rights held in subsidiary | 33.33% |  |
Shareholders'equity (deficit) | $ 25 |  |
Net income for the year | $ 4 |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Metanol Do Nordeste S A Metanor [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 34.54% |  |
Proportion of voting rights held in subsidiary | 50.00% |  |
Shareholders'equity (deficit) | $ 24 |  |
Net income for the year | $ 4 |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Companhia De Coque Calcinado De Petroleo S A Coquepar [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 45.00% |  |
Proportion of voting rights held in subsidiary | 45.00% |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Braskem S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 36.15% |  |
Proportion of voting rights held in subsidiary | 47.03% |  |
Shareholders'equity (deficit) | $ 1,038 |  |
Net income for the year | $ (601) |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Refining Transportation And Marketing Segment [Member] | Nitroclor Ltda [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 38.80% |  |
Proportion of voting rights held in subsidiary | 38.80% |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Exploration And Production Segment [Member] | Petrobras Logistica De Exploracao E Producao S A P B L O G [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Sales revenues | $ 669 |  |
Shareholders'equity (deficit) | 116 |  |
Net income for the year | $ 202 |  |
Country | Brazil |  |
Name of subsidiary | E&P |  |
Exploration And Production Segment [Member] | Fundo De Investimento Imobiliario R B Logistica F I I [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 99.15% |  |
Proportion of voting rights held in subsidiary | 99.15% |  |
Shareholders'equity (deficit) | $ 19 |  |
Net income for the year | $ 5 |  |
Country | Brazil |  |
Name of subsidiary | E&P |  |
Biofuels Segment [Member] | Petrobras Biocombustivel S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Sales revenues | $ 96 |  |
Shareholders'equity (deficit) | 157 |  |
Net income for the year | $ (18) |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Araucaria Nitrogenados S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Shareholders'equity (deficit) | $ 32 |  |
Net income for the year | $ (1) |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Gas And Power Segment [Member] | Termomacae Ltda [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Sales revenues | $ 17 |  |
Shareholders'equity (deficit) | 62 |  |
Net income for the year | $ 12 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Termobahia S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 98.85% |  |
Proportion of voting rights held in subsidiary | 98.85% |  |
Shareholders'equity (deficit) | $ 100 |  |
Net income for the year | $ 89 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Baixada Santista Energia S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Shareholders'equity (deficit) | $ 64 |  |
Net income for the year | $ 2 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Transportadora Brasileira Gasoduto Brasil Bolivia [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 51.00% |  |
Proportion of voting rights held in subsidiary | 51.00% |  |
Sales revenues | $ 349 |  |
Shareholders'equity (deficit) | 104 |  |
Net income for the year | $ 153 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Brasympe Energia S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 20.00% |  |
Proportion of voting rights held in subsidiary | 20.00% |  |
Shareholders'equity (deficit) | $ 15 |  |
Net income for the year | $ 2 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Brentech Energia S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 30.00% |  |
Proportion of voting rights held in subsidiary | 30.00% |  |
Shareholders'equity (deficit) | $ 13 |  |
Net income for the year | $ 1 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | U E G Araucaria Ltda [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 18.80% |  |
Proportion of voting rights held in subsidiary | 18.80% |  |
Shareholders'equity (deficit) | $ 66 |  |
Net income for the year | $ (22) |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Energetica S U A P E I I [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 20.00% |  |
Proportion of voting rights held in subsidiary | 20.00% |  |
Shareholders'equity (deficit) | $ 104 |  |
Net income for the year | $ 29 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Gas And Power Segment [Member] | Bioenergetica Britaruma S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 30.00% |  |
Proportion of voting rights held in subsidiary | 30.00% |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |
Corporate Segment [Member] | Braspetro Oil Services Company Brasoil [Member] | Country Of Cayman Islands [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Shareholders'equity (deficit) | $ 9 |  |
Net income for the year | $ 8 |  |
Country | Cayman Islands |  |
Name of subsidiary | Corporate, others |  |
Corporate Segment [Member] | Procurement Negocios Eletronicos S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 72.00% |  |
Proportion of voting rights held in subsidiary | 49.00% |  |
Sales revenues | $ 20 |  |
Shareholders'equity (deficit) | 8 |  |
Net income for the year | $ 2 |  |
Country | Brazil |  |
Name of subsidiary | Corporate, others |  |
Corporate Segment [Member] | Petrobras Comercializadora De Energia Ltda P B E N [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Sales revenues | $ 26 |  |
Shareholders'equity (deficit) | 14 |  |
Net income for the year | $ 4 |  |
Country | Brazil |  |
Name of subsidiary | Corporate, others |  |
Corporate Segment [Member] | Associacao Petrobras De Saude [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 93.41% |  |
Proportion of voting rights held in subsidiary | 93.41% |  |
Sales revenues | $ 823 |  |
Shareholders'equity (deficit) | 144 |  |
Net income for the year | $ 18 |  |
Country | Brazil |  |
Name of subsidiary | Corporate, others |  |
R Tand M [Member] | Refinaria De Mucuripe S A [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Proportion of voting rights held in subsidiary | 100.00% |  |
Country | Brazil |  |
Name of subsidiary | RT&M |  |
Gas And Power [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net income for the year | $ 1,357 | $ 1,128 | $ (122)
Gas And Power [Member] | Transportadora Sulbrasileirade Gas T S B [Member] | Countries Of Domicile [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 25.00% |  |
Proportion of voting rights held in subsidiary | 25.00% |  |
Shareholders'equity (deficit) | $ 3 |  |
Net income for the year | $ 2 |  |
Country | Brazil |  |
Name of subsidiary | G&LCE |  |

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