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INVENTORIES, NET - Components of Inventories, Net (Detail) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Finished goods $ 63.8 $ 62.0
Work in process 71.6 66.8
Raw materials 211.1 206.0
Inventoried costs related to long-term contracts 49.7 45.7
Inventories, net $ 396.2 $ 380.5