Plant, Property and Equipment, Net - Components of Plant, Property and Equipment, Net (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Land and improvements	$ 28.2	$ 25.4
Machinery and equipment	898.6	909.3
Buildings and improvements	244.6	242.0
Furniture, fixtures and office equipment	68.0	66.3
Construction work in progress	68.5	42.3
Other	5.3	6.7
Plant, property and equipment, gross	1,313.2	1,292.0
Less - accumulated depreciation	(848.7)	(848.5)
Plant, property and equipment, net	$ 464.5	$ 443.5