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Financial and Derivative Instruments - Effect of Derivatives Not Designated On Hedging Instruments (Details) - Commodity - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative instruments not designated as hedging instruments, gain (loss), net	$ (194)	$ (209)
Sales and other operating revenues
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative instruments not designated as hedging instruments, gain (loss), net	(144)	(158)
Purchased crude oil and products
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative instruments not designated as hedging instruments, gain (loss), net	(44)	(64)
Other income (loss)
Consolidated Statement of Income: The Effect of Derivatives not Designated as Hedging Instruments
Derivative instruments not designated as hedging instruments, gain (loss), net	$ (6)	$ 13

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CC
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC

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