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Segment Information (Reconciliation of Segment Revenues To Sales and Other Operating Revenues) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues | [1] | $ 34,200 | $ 31,517
Refining & Marketing |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues | [1] | 32,326 | 29,457
Midstream |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues | [1] | 1,302 | 1,441
Renewable Diesel |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues | [1] | 572 | 619
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 35,738 | 33,033
Operating Segments | Refining & Marketing |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 32,335 | 29,497
Operating Segments | Midstream |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 2,824 | 2,910
Operating Segments | Renewable Diesel |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 579 | 626
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 1,538 | 1,516
Intersegment Eliminations | Refining & Marketing |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 9 | 40
Intersegment Eliminations | Midstream |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | 1,522 | 1,469
Intersegment Eliminations | Renewable Diesel |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales and other operating revenues |  | $ 7 | $ 7
[1] | Includes sales to related parties. See Note 6 for additional information. See Note 17 for the disaggregation of our revenue from external customers by segment and product line.

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