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Supplementary information on Oil and Gas Exploration and Production (unaudited) (Details 8) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Brazil 1 [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | $ 191,383 | $ 114,780 | $ 45,978
Sales and transfers of oil and gas, net of production cost | (49,797) | (54,230) | (38,074)
Development cost incurred | 10,929 | 6,883 | 6,035
Net change due to purchases and sales of minerals in place | (3,894) | (17,030) | (246)
Net change due to extensions, discoveries and improved recovery related costs | 5,858 |  |
Revisions of previous quantity estimates | 31,616 | 64,535 | 41,211
Net change in prices, transfer prices and in production costs | (63,907) | 129,462 | 108,268
Changes in estimated future development costs | (16,409) | (23,317) | (19,900)
Accretion of discount | 19,138 | 11,478 | 4,598
Net change in income taxes | 20,611 | (41,178) | (33,089)
Balance at ending | 145,529 | 191,383 | 114,780
South America [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | 141 | 89 | 1
Sales and transfers of oil and gas, net of production cost | (54) | (62) | (43)
Development cost incurred | 53 | 31 | 44
Net change due to extensions, discoveries and improved recovery related costs | 19 |  |
Revisions of previous quantity estimates | 3 | 17 | 205
Net change in prices, transfer prices and in production costs | (97) | 122 | 58
Changes in estimated future development costs | (27) | (39) | (119)
Accretion of discount | 20 | 14 |
Net change in income taxes | 30 | (17) | (47)
Other - unspecified | 5 | (15) | (9)
Balance at ending | 93 | 141 | 89
Total [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | 191,524 | 114,869 | 45,979
Sales and transfers of oil and gas, net of production cost | (49,851) | (54,291) | (38,117)
Development cost incurred | 10,982 | 6,913 | 6,079
Net change due to purchases and sales of minerals in place | (3,894) | (17,030) | (246)
Net change due to extensions, discoveries and improved recovery related costs | 5,876 |  |
Revisions of previous quantity estimates | 31,619 | 64,553 | 41,416
Net change in prices, transfer prices and in production costs | (64,004) | 129,584 | 108,326
Changes in estimated future development costs | (16,436) | (23,356) | (20,019)
Accretion of discount | 19,159 | 11,492 | 4,598
Net change in income taxes | 20,641 | (41,194) | (33,136)
Other - unspecified | 5 | (15) | (9)
Balance at ending | 145,622 | 191,524 | 114,869
Equity Method Investees [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Balance at beginning | 886 | 470 | 74
Sales and transfers of oil and gas, net of production cost | (123) | (235) | (177)
Development cost incurred | 37 | 29 | 37
Net change due to extensions, discoveries and improved recovery related costs | 11 | 10 |
Revisions of previous quantity estimates | 82 | 82 | 30
Net change in prices, transfer prices and in production costs | (201) | 349 | 401
Changes in estimated future development costs | (17) | (4) | 3
Accretion of discount | 68 | 93 | 49
Net change in income taxes |  |  | 48
Other - unspecified | (53) | 92 | (7)
Balance at ending | $ 691 | $ 886 | 470
Net change due to extensions, discoveries and improved recovery related costs |  |  | $ 10

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