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Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Inventory, Net [Abstract]    
Raw materials $ 64.1 $ 66.4
Work in progress 18.0 14.2
Finished goods 60.9 75.2
Subtotal 143.0 155.8
Less: reserves (34.8) (37.4)
Total $ 108.2 $ 118.4