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Commitments and Contingencies - Renewable Fuel Standards and RFS Disputes (Details) - EHS - Petroleum Segment - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Loss Contingencies [Line Items] |  |  |
Expense for compliance with RFS | $ (114) | $ 435 | $ 435
RFS obligation | $ 329 | $ 692 |

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