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Segment Information (Income from Equity Method Investments) (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] |  |  |  |  |
Income from equity method investments | $ 219 | $ 215 | $ 796 |  | $ 547
Operating Segments |  |  |  |  |
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] |  |  |  |  |
Income from equity method investments | 219 | 215 | 645 |  | 547
Operating Segments | Refining & Marketing |  |  |  |  |
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] |  |  |  |  |
Income from equity method investments | 43 | 24 | 85 |  | 5
Operating Segments | Midstream |  |  |  |  |
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] |  |  |  |  |
Income from equity method investments | 176 | 191 | 560 |  | 542
Corporate |  |  |  |  |
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] |  |  |  |  |
Income from equity method investments | $ 0 | $ 0 | $ 151 | [1] | $ 0
[1] | 2024 represents the gain from the Whistler Joint Venture Transaction. See Note 13 for additional information.

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