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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 429.5 $ 403.3
Accumulated depreciation (230.8) (206.9)
Property, plant and equipment, Net 198.7 196.4
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 19.8 18.6
Buildings [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 60.0 57.0
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 330.7 311.7
Work in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 19.0 $ 16.0