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Inventories (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Inventory, Finished Goods, Net of Reserves $ 77.6 $ 45.2
Inventory, Raw Materials, Net of Reserves 35.3 35.3
Inventory, Work in Process, Net of Reserves 7.2 6.7
Total inventories $ 120.1 $ 87.2