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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

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