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Inventories - Inventory Amounts by Product Type (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Inventory Disclosure [Abstract] |  |
NGLs | $ 3,129 | $ 2,768
Petrochemicals and refined products | 603 | 652
Crude oil | 424 | 523
Natural gas | 4 | 12
Total | $ 4,160 | $ 3,955

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