Restructuring and Other - Narrative (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($) Facility
Restructuring Cost And Reserve [Line Items]
Employee termination costs	$ 8.1	$ 3.2
Other restructuring charges	8.2	1.4
Multi-employer pension plan charges	0.7	$ 0.8
Marketing Solutions
Restructuring Cost And Reserve [Line Items]
Number of manufacturing facility closures announced | Facility		1
Gain on sale of previously impaired assets		$ 4.9
Facility Closures
Restructuring Cost And Reserve [Line Items]
Impairment of other long lived assets	$ 0.1