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Segment Information (Depreciation and Amortization) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation and amortization	$ 846	$ 845	$ 2,511	$ 2,479
Operating Segments
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation and amortization	818	803	2,436	2,399
Operating Segments | Refining & Marketing
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation and amortization	465	463	1,395	1,411
Operating Segments | Midstream
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation and amortization	353	340	1,041	988
Corporate
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Depreciation and amortization	$ 28	$ 42	$ 75	$ 80

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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