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Supplementary information on Oil and Gas Exploration and Production (unaudited) (Details 4) - bbl bbl in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Consolidated Entitie 1 [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 8,677 | 8,106 | 7,088
Extensions and discoveries | 794 |  |
Revisions of previous estimates | 668 | 1,575 | 1,697
Sales of reserves | (47) | (397) | (14)
Production for the year | (594) | (606) | (664)
Ending balance | 9,498 | 8,677 | 8,106
Equity Method Investees 1 [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 8,683 | 8,113 | 7,095
Extensions and discoveries | 794 |  |
Revisions of previous estimates | 669 | 1,575 | 1,697
Sales of reserves | (47) | (398) | (14)
Production for the year | (595) | (607) | (666)
Ending balance | 9,504 | 8,683 | 8,113
Country Of Brazil [Member] | Consolidated Entitie 1 [Member] | Natural Gas [member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 8,504 | 7,912 | 7,062
Extensions and discoveries | 779 |  |
Revisions of previous estimates | 673 | 1,560 | 1,512
Sales of reserves | (47) | (382) | (14)
Production for the year | (573) | (586) | (647)
Ending balance | 9,335 | 8,504 | 7,912
Country Of Brazil [Member] | Consolidated Entitie 1 [Member] | Synthetics Gas 1 [Member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance |  | 17 |
Revisions of previous estimates |  |  | 18
Sales of reserves |  | (15) |
Production for the year |  | (1) | (1)
Ending balance |  |  | 17
South America [Member] | Consolidated Entitie 1 [Member] | Natural Gas [member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 173 | 177 | 26
Extensions and discoveries | 15 |  |
Revisions of previous estimates | (5) | 16 | 167
Production for the year | (20) | (20) | (16)
Ending balance | 163 | 173 | 177
North America [Member] | Equity Method Investees 1 [Member] | Natural Gas [member] |  |  |
Guarantor and Issuer, Guaranteed Security [Line Items] |  |  |
Beginning balance | 6 | 7 | 8
Revisions of previous estimates | 1 |  |
Sales of reserves |  | (1) |
Production for the year | (1) | (1) | (1)
Ending balance | 7 | 6 | 7

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