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Derivative and Financial Instruments - Schedule of Income Statement Location and Gain (Loss) Amounts of Derivatives (Details) - Commodity Contract - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Sales and other operating revenues
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ (11)	$ (129)	$ 1	$ (549)
Other income
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	(5)	(4)	(6)	(2)
Purchased commodities
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) from commodity derivatives	$ 7	$ 6	$ (49)	$ 352

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-Section 50
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