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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Consolidated Entitie [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 8,910 | 8,419 | 7,534
Extensions and discoveries | 95 |  |
Revisions of previous estimates | 1,140 | 1,705 | 1,667
Sales of reserves | (147) | (465) | (9)
Production for the year | (786) | (749) | (774)
Ending balance | 9,212 | 8,910 | 8,419
Equity Method Investees [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 8,926 | 8,435 | 7,552
Extensions and discoveries | 95 |  |
Revisions of previous estimates | 1,142 | 1,708 | 1,668
Sales of reserves | (147) | (465) | (9)
Production for the year | (789) | (752) | (777)
Ending balance | 9,228 | 8,926 | 8,435
Country Of Brazil [Member] | Consolidated Entitie [Member] | Crude Oil [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 8,908 | 8,406 | 7,534
Extensions and discoveries | 95 |  |
Revisions of previous estimates | 1,140 | 1,705 | 1,654
Sales of reserves | (147) | (455) | (9)
Production for the year | (786) | (748) | (773)
Ending balance | 9,210 | 8,908 | 8,406
Country Of Brazil [Member] | Consolidated Entitie [Member] | Synthetics Oil [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance |  | 10 |
Revisions of previous estimates |  |  | 11
Sales of reserves |  | (10) |
Production for the year |  | (1) | (1)
Ending balance |  |  | 10
South America [Member] | Consolidated Entitie [Member] | Crude Oil [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 2 | 2 |
Revisions of previous estimates |  |  | 2
Ending balance | 2 | 2 | 2
North America [Member] | Equity Method Investees [Member] | Crude Oil [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 16 | 17 | 18
Revisions of previous estimates | 2 | 3 | 1
Sales of reserves |  | (1) |
Production for the year | (2) | (3) | (3)
Ending balance | 16 | 16 | 17

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