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Miscellaneous Financial Information (Crude Oil, Products And Merchandise) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Crude oil | $ 6,483 | $ 6,944
Petroleum products | 6,017 | 6,248
Chemical products | 4,142 | 3,930
Gas/other | 2,802 | 3,406
Total | $ 19,444 | $ 20,528

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