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Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 123.7 $ 104.0
Work in process 53.8 47.5
Finished goods 71.1 67.9
Total inventories, net 248.6 219.4
Inventory valuation reserve $ 9.6 $ 10.8