Plant, Property and Equipment, Net - Components of Plant, Property and Equipment, Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 1,128.9	$ 1,056.9
Buildings and improvements	279.3	265.3
Furniture, fixtures and office equipment	79.8	69.1
Construction work in progress	48.8	67.9
Land and improvements	33.3	27.8
Other	10.5	10.3
Plant, property and equipment, gross	1,580.6	1,497.3
Less: accumulated depreciation	(1,049.1)	(978.5)
Plant, property and equipment, net	531.5	518.8
Depreciation expense	$ 84.1	$ 82.8	$ 78.3
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years