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Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Inventories [Abstract]    
Raw materials and supplies $ 128.9 $ 120.3
Work in process 29.0 26.2
Finished products 78.4 74.6
Inventory reserves (32.8) (30.3)
Total Inventory $ 203.5 $ 190.8