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Supplementary information on Oil and Gas Exploration and Production (unaudited) (Details 3) - bbl bbl in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Consolidated Entitie [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Beginning balance | 9,212 | 8,910 | 8,419
Extensions and discoveries |  | 95 |
Revisions of previous estimates | 1,185 | 1,140 | 1,705
Sales of reserves |  | (147) | (465)
Production for the year | (761) | (786) | (749)
Ending balance | 9,636 | 9,212 | 8,910
Equity Method Investees [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Beginning balance | 9,228 | 8,926 | 8,435
Extensions and discoveries |  | 95 |
Revisions of previous estimates | 1,184 | 1,142 | 1,708
Sales of reserves |  | (147) | (465)
Production for the year | (764) | (789) | (752)
Ending balance | 9,649 | 9,228 | 8,926
Country Of Brazil [Member] | Consolidated Entitie [Member] | Crude Oil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Beginning balance | 9,210 | 8,908 | 8,406
Extensions and discoveries |  | 95 |
Revisions of previous estimates | 1,185 | 1,140 | 1,705
Sales of reserves |  | (147) | (455)
Production for the year | (761) | (786) | (748)
Ending balance | 9,634 | 9,210 | 8,908
Country Of Brazil [Member] | Consolidated Entitie [Member] | Synthetics Oil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Beginning balance |  |  | 10
Sales of reserves |  |  | (10)
Production for the year |  |  | (1)
Country South America [Member] | Consolidated Entitie [Member] | Crude Oil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Beginning balance | 2 | 2 | 2
Ending balance | 2 | 2 | 2
Country North America [Member] | Equity Method Investees [Member] | Crude Oil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Beginning balance | 16 | 16 | 17
Revisions of previous estimates |  | 2 | 3
Sales of reserves |  |  | (1)
Production for the year | (2) | (2) | (3)
Ending balance | 13 | 16 | 16

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