Restructuring and Other - Narrative (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($) Facility
Restructuring Cost And Reserve [Line Items]
Employee termination costs	$ 3.2	$ 6.4
Other restructuring charges	1.6	$ 1.6
Business Services
Restructuring Cost And Reserve [Line Items]
Gain on sale of previously impaired assets	$ 4.9
Marketing Solutions
Restructuring Cost And Reserve [Line Items]
Number of facilities closed | Facility		1
Marketing Solutions | Facility Closures
Restructuring Cost And Reserve [Line Items]
Impairment of other long lived assets		$ 0.5