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Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 111.6 $ 104.0
Work in process 56.9 47.5
Finished goods 66.9 67.9
Total inventories, net 235.4 219.4
Inventory valuation reserve $ 10.2 $ 10.8