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Inventories - Component of Inventories (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Inventory, Raw Materials, Net of Reserves $ 49.9us-gaap_InventoryRawMaterialsNetOfReserves $ 53.1us-gaap_InventoryRawMaterialsNetOfReserves
Inventory, Work in Process, Net of Reserves 25.9us-gaap_InventoryWorkInProcessNetOfReserves 23.7us-gaap_InventoryWorkInProcessNetOfReserves
Inventory, Finished Goods, Net of Reserves 50.7us-gaap_InventoryFinishedGoodsNetOfReserves 44.2us-gaap_InventoryFinishedGoodsNetOfReserves
Total inventories $ 126.5us-gaap_InventoryNet $ 121.0us-gaap_InventoryNet