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Derivatives and Financial Instruments - Schedule of Gains/(Losses) From Commodity Derivatives (Details) - Commodity derivatives - USD ($) $ in Millions	3 Months Ended
	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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