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Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Inventories [Abstract]    
Raw materials and supplies $ 120.3 $ 133.0
Work in process 26.2 27.6
Finished products 74.6 82.4
Inventory reserves (30.3) (38.1)
Total Inventory $ 190.8 $ 204.9