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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories at December 31 consisted of the following:
20202019
Finished products$758.9 $647.3 
Work in process2,535.4 2,067.6 
Raw materials and supplies651.2 424.6 
Total (approximates replacement cost)3,945.5 3,139.5 
Increase to LIFO cost34.8 51.2 
Inventories$3,980.3 $3,190.7