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Taxes (Details 1) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets taxes losses carryforward | $ 5,704 | $ 5,908 |
Deferred tax assets | 9,565 | 10,770 | $ 11,441
Deferred tax liabilities | (870) | (1,413) |
Asset Retirement Obligations And Other Liabilities [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets | 4,165 | 4,875 |
Deferred tax liabilities | (807) | (714) |
Fair Value Of Financial Instruments [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets | 735 | 839 |
Employee post retirement obligations [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets | 478 | 411 |
Provision For Litigation [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets | 306 | 364 |
Fair Value Of Property Plant And Equipment In Business Combination [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax liabilities | (2,034) | (2,205) |
Goodwill Amortization [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax liabilities | (575) | (518) |
Other temporary differences [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets | 723 | 397 |
Temporary differences [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Deferred tax assets | 12,111 | 12,794 |
Deferred tax liabilities | $ (3,416) | $ (3,437) |

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