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Basis of Presentation, Principles of Consolidation, and Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Raw materials and supplies | $ 1,594 | $ 1,740
Finished goods | 2,408 | 2,407
Market inventories | 6,584 | 6,222
Total inventories | $ 10,586 | $ 10,369

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