Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Actuarial changes
OCI, tax expense (benefit)	$ 1	$ 1	$ 7	$ 2
Prior service
OCI, tax expense (benefit)	(2)	(3)	(6)	(10)
Other
OCI, tax expense (benefit)	$ 0	$ 1	$ 0	$ 0

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Marathon Petroleum Corp 10-Q