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Supplementary information on Oil and Gas Exploration and Production (unaudited) (Details 7) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Brazil 1 [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | $ 819,428 | $ 983,826 | $ 612,924
Future production costs | (348,787) | (399,655) | (264,158)
Future development costs | (64,121) | (62,548) | (44,027)
Future income tax expenses | (140,774) | (178,412) | (104,568)
Undiscounted future net cash flows | 265,745 | 343,211 | 200,171
10 percent midyear annual discount for timing of estimated cash flows (1) | (120,216) | (151,828) | (85,391)
Standardized measure of discounted future net cash flows | 145,529 | 191,383 | 114,780
South America [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | 650 | 837 | 587
Future production costs | (354) | (357) | (261)
Future development costs | (113) | (128) | (107)
Future income tax expenses | (43) | (88) | (61)
Undiscounted future net cash flows | 139 | 264 | 159
10 percent midyear annual discount for timing of estimated cash flows (1) | (46) | (124) | (70)
Standardized measure of discounted future net cash flows | 93 | 141 | 89
Consolidated Entity [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | 820,078 | 984,663 | 613,511
Future production costs | (349,142) | (400,012) | (264,419)
Future development costs | (64,235) | (62,676) | (44,134)
Future income tax expenses | (140,818) | (178,500) | (104,628)
Undiscounted future net cash flows | 265,884 | 343,475 | 200,330
10 percent midyear annual discount for timing of estimated cash flows (1) | (120,262) | (151,951) | (85,461)
Standardized measure of discounted future net cash flows | 145,622 | 191,524 | 114,869
Equity Method Investees [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | 1,213 | 1,581 | 1,129
Future production costs | (191) | (273) | (329)
Future development costs | (13) | (21) | (28)
Undiscounted future net cash flows | 1,009 | 1,287 | 772
10 percent midyear annual discount for timing of estimated cash flows (1) | (319) | (401) | (303)
Standardized measure of discounted future net cash flows | $ 691 | $ 886 | $ 470

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