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Acquisitions and Dispositions - Schedule of Supplemental Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Pro Forma Combined |  |
Operating revenues and other income | $ 14,476 | $ 15,517
Income (loss) before income taxes |  | 4,562
Net Income (Loss) | $ 2,551 | $ 2,920
Earnings Per Share [Abstract] |  |
Basic (in dollars per share) | $ 2.16 | $ 2.38
Diluted (in dollars per share) | $ 2.15 | $ 2.38
Pro Forma |  |
Pro Forma Combined |  |
Operating revenues and other income |  | $ 16,120
Income (loss) before income taxes |  | 4,632
Net Income (Loss) |  | $ 2,973
Earnings Per Share [Abstract] |  |
Basic (in dollars per share) |  | $ 2.43
Diluted (in dollars per share) |  | $ 2.42
Surmont |  |
Pro Forma Combined |  |
Pro forma = total revenues and other income |  | $ 603
Pro forma - Income (loss) before income taxes |  | 70
Pro forma - Net income (loss) |  | $ 53

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