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Supplementary information on Oil and Gas Exploration and Production (unaudited) (Details 8) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Brazil [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | $ 145,529 | $ 191,383 | $ 114,780
Sales and transfers of oil and gas, net of production cost | (44,911) | (49,797) | (54,230)
Development cost incurred | 14,007 | 10,929 | 6,883
Net change due to extensions, discoveries and improved recovery related costs |  | 5,858 |
Revisions of previous quantity estimates | 32,619 | 31,616 | 64,535
Net change in prices, transfer prices and in production costs | 10,226 | (63,907) | 129,462
Changes in estimated future development costs | (23,749) | (16,409) | (23,317)
Accretion of discount | 14,553 | 19,138 | 11,478
Net change in income taxes | (4,848) | 20,611 | (41,178)
Balance at ending | 143,425 | 145,529 | 191,383
Net change due to purchases and sales of minerals in place |  | (3,894) | (17,030)
South America [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | 93 | 141 | 89
Sales and transfers of oil and gas, net of production cost | (52) | (54) | (62)
Development cost incurred | 34 | 53 | 31
Net change due to extensions, discoveries and improved recovery related costs | 7 | 19 |
Revisions of previous quantity estimates | 26 | 3 | 17
Net change in prices, transfer prices and in production costs | (41) | (97) | 122
Changes in estimated future development costs | (18) | (27) | (39)
Accretion of discount | 13 | 20 | 14
Net change in income taxes | (17) | 30 | (17)
Other - unspecified | 3 | 5 | (15)
Balance at ending | 47 | 93 | 141
Total [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | 145,622 | 191,524 | 114,869
Sales and transfers of oil and gas, net of production cost | (44,963) | (49,851) | (54,291)
Development cost incurred | 14,040 | 10,982 | 6,913
Net change due to extensions, discoveries and improved recovery related costs | 7 | 5,876 |
Revisions of previous quantity estimates | 32,645 | 31,619 | 64,553
Net change in prices, transfer prices and in production costs | 10,185 | (64,004) | 129,584
Changes in estimated future development costs | (23,767) | (16,436) | (23,356)
Accretion of discount | 14,566 | 19,159 | 11,492
Net change in income taxes | (4,865) | 20,641 | (41,194)
Other - unspecified | 3 | 5 | (15)
Balance at ending | 143,473 | 145,622 | 191,524
Net change due to purchases and sales of minerals in place |  | (3,894) | (17,030)
Equity Method Investees [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | 691 | 886 | 470
Sales and transfers of oil and gas, net of production cost | (119) | (123) | (235)
Development cost incurred | 14 | 37 | 29
Net change due to extensions, discoveries and improved recovery related costs | 2 | 11 |
Revisions of previous quantity estimates | (31) | 82 | 82
Net change in prices, transfer prices and in production costs | (71) | (201) | 349
Changes in estimated future development costs | (6) | (17) | (4)
Accretion of discount | 60 | 68 | 93
Other - unspecified | (32) | (53) | 92
Balance at ending | $ 506 | $ 691 | 886
Net change due to extensions, discoveries and improved recovery related costs |  |  | $ 10

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