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Inventories (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Inventory Disclosure [Abstract] |  |
Raw materials | $ 111 | $ 96
Materials and supplies | 837 | 783
Commodity inventory and finished goods | 715 | 1,066
Inventories, gross | 1,663 | 1,945
Revaluation to LIFO | (99) | (99)
Total | $ 1,564 | $ 1,846

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