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Estimates (Schedule of Inventory) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Inventory, Net [Abstract] |  |
Natural gas, NGLs and refined products | $ 1,658 | $ 1,802
Crude oil | 258 | 246
Spare parts and other | 562 | 413
Total inventories | $ 2,478 | $ 2,461

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