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Inventories (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 115.1 $ 97.8
Work in process 48.5 47.3
Finished goods 74.0 64.9
Total inventories, net 237.6 210.0
Inventory valuation reserve $ 9.7 $ 10.6