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v3.26.1

Property, Plant and Equipment (PP&E) (Summary of Property, Plant And Equipment) (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Property, Plant and Equipment [Line Items] |  |  |
Gross PP&E | $ 71,913 |  | $ 71,009
Accumulated Depreciation | 34,316 |  | 33,612
Net PP&E | 37,597 |  | 37,397
Depreciation | 732 | $ 727 |
Operating Segments | Refining & Marketing |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gross PP&E | 34,659 |  | 34,372
Accumulated Depreciation | 20,810 |  | 20,462
Net PP&E | 13,849 |  | 13,910
Operating Segments | Midstream |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gross PP&E | 34,669 |  | 34,057
Accumulated Depreciation | 12,015 |  | 11,690
Net PP&E | 22,654 |  | 22,367
Operating Segments | Renewable Diesel |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gross PP&E | 970 |  | 970
Accumulated Depreciation | 411 |  | 396
Net PP&E | 559 |  | 574
Corporate |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Gross PP&E | 1,615 |  | 1,610
Accumulated Depreciation | 1,080 |  | 1,064
Net PP&E | $ 535 |  | $ 546

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