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Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 104.0 $ 97.7
Work in process 47.5 53.0
Finished goods 67.9 82.4
Total inventories, net 219.4 233.1
Inventory valuation reserve $ 10.8 $ 9.0