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Operating Segments and Geographic Data - Segment Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | $ 8,173 | $ 14,066 | $ 5,950
Operating Segments | Upstream |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | 6,874 | 12,733 | 6,126
Operating Segments | Upstream | United States |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | 1,141 | 3,678 | 1,934
Operating Segments | Upstream | International |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | 5,733 | 9,055 | 4,192
Operating Segments | Downstream |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | 1,628 | 1,795 | 750
Operating Segments | Downstream | United States |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | 1,109 | 1,515 | 547
Operating Segments | Downstream | International |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | 519 | 280 | 203
Segment Reconciling Items |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Income Tax Expense (Benefit) | $ (329) | $ (462) | $ (926)

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