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Subsequent events (Details 7) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Brazil 1 [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | $ 983,826 | $ 612,924 | $ 333,248
Future production costs | (399,655) | (264,158) | (182,534)
Future development costs | (62,548) | (44,027) | (31,236)
Future income tax expenses | (178,412) | (104,568) | (46,862)
Undiscounted future net cash flows | 343,211 | 200,171 | 72,616
10 percent midyear annual discount for timing of estimated cash flows (1) | (151,828) | (85,391) | (26,638)
Standardized measure of discounted future net cash flows | 191,383 | 114,780 | 45,978
South America 1 [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | 837 | 587 | 69
Future production costs | (357) | (261) | (51)
Future development costs | (128) | (107) | (16)
Future income tax expenses | (88) | (61) |
Undiscounted future net cash flows | 264 | 159 | 2
10 percent midyear annual discount for timing of estimated cash flows (1) | (124) | (70) |
Standardized measure of discounted future net cash flows | 141 | 89 | 1
Total 1 [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | 984,663 | 613,511 | 333,317
Future production costs | (400,012) | (264,419) | (182,585)
Future development costs | (62,676) | (44,134) | (31,252)
Future income tax expenses | (178,500) | (104,628) | (46,862)
Undiscounted future net cash flows | 343,475 | 200,330 | 72,618
10 percent midyear annual discount for timing of estimated cash flows (1) | (151,951) | (85,461) | (26,638)
Standardized measure of discounted future net cash flows | 191,524 | 114,869 | 45,979
Equity Method Investees 5 [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Future cash inflows | 1,581 | 1,129 | 667
Future production costs | (273) | (329) | (465)
Future development costs | (21) | (28) | (48)
Future income tax expenses |  |  | (79)
Undiscounted future net cash flows | 1,287 | 772 | 75
10 percent midyear annual discount for timing of estimated cash flows (1) | (401) | (303) | (1)
Standardized measure of discounted future net cash flows | $ 886 | $ 470 | $ 74

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