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Inventories, Net (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Finished Goods $ 258.2 $ 238.3
Work in Progress 66.8 73.5
Raw Materials 191.8 187.2
Supplies 86.3 83.9
Total Inventories $ 603.1 $ 582.9