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Inventories (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials $ 53.1us-gaap_InventoryRawMaterials $ 46.1us-gaap_InventoryRawMaterials
Work in process 23.7us-gaap_InventoryWorkInProcess 24.3us-gaap_InventoryWorkInProcess
Finished goods 44.2us-gaap_InventoryFinishedGoods 39.4us-gaap_InventoryFinishedGoods
Total inventories $ 121.0us-gaap_InventoryNet $ 109.8us-gaap_InventoryNet