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Inventories (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Inventory Disclosure [Abstract]    
Finished products $ 1,114.0 $ 791.7
Work in process 4,035.1 3,248.6
Raw materials and supplies 2,237.3 1,630.1
Total (approximates replacement cost) 7,386.4 5,670.4
Increase to last-in, first-out (LIFO) cost 73.4 102.4
Inventories $ 7,459.8 $ 5,772.8