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Inventories (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 180.7 $ 124.7
Work in process 76.7 57.8
Finished goods 83.7 65.9
Total inventories, net 341.1 248.4
Inventory valuation reserve $ 11.1 $ 9.7