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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 22, 2024
Income Taxes Information [Line Items] |  |  |  |  |
Net deferred tax assets |  | $ 4,659 | $ 3,696 |  |
Deferred income taxes |  | 11,426 | 8,813 |  |
U.S. foreign tax credits |  | 3,300 | 4,700 |  |
US foreign tax credits expired |  | 1,200 |  |  |
Adjustment to valuation allowance |  | (409) | (2) | $ 5 |
Undistributed earnings of foreign subsidiaries |  | 5,226 |  |  |
Estimated tax payable on undistributed unremitted foreign income |  | 261 |  |  |
Unrecognized tax benefits that would impact effective tax rate |  | 368 | 378 | 701 |
Unrecognized tax benefit, lapse of statute |  | 19 | 224 | 75 |
Unrecognized tax benefits, settlements |  | 121 | 96 | 510 |
Recognized federal and state tax benefit |  |  |  | 515 |
Unrecognized tax benefits, income tax penalties and interest accrued |  | 26 | 45 | 35 |
Interest and penalties (benefiting) charging earnings |  | 19 | (10) | $ 12 |
Certain Jurisdictions Outside Of Domestic |  |  |  |  |
Income Taxes Information [Line Items] |  |  |  |  |
Operating loss and tax credit carryforward |  | 1,600 | 900 |  |
Norwegian Tax Administration |  |  |  |  |
Income Taxes Information [Line Items] |  |  |  |  |
Adjustment to valuation allowance | $ 58 |  |  |  |
Canada Revenue Agency |  |  |  |  |
Income Taxes Information [Line Items] |  |  |  |  |
Unrecognized tax benefits, settlements |  |  | 92 |  |
Noncurrent Assets |  |  |  |  |
Income Taxes Information [Line Items] |  |  |  |  |
Net deferred tax assets |  | 230 | $ 255 |  |
Marathon Oil Corporation |  |  |  |  |
Income Taxes Information [Line Items] |  |  |  |  |
Increase in deferred income taxes due to acquisition |  | 2,500 |  |  | $ 2,486
Operating loss carryforwards |  | $ 700 |  |  |

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