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Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Inventory Disclosure [Abstract]    
Raw materials $ 6,822 $ 6,681
Work-in-process 1,435 1,438
Finished goods 9,228 8,329
Supplies 377 379
Total inventories $ 17,862 $ 16,827