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Derivatives and Financial Instruments - Schedule of Gains/(Losses) From Commodity Derivatives (Details) - Commodity derivatives - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net loss from commodity derivative activity | $ (227) | $ (420)
Sales and other operating revenues |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net loss from commodity derivative activity | (65) | (202)
Other income |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net loss from commodity derivative activity | 14 | 38
Purchased crude oil and products |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Net loss from commodity derivative activity | $ (176) | $ (256)

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