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Restructuring and Other - Narrative (Detail)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
Facility
Sep. 30, 2017
USD ($)
Facility
Sep. 30, 2018
USD ($)
Facility
Sep. 30, 2017
USD ($)
Facility
Restructuring Cost And Reserve [Line Items]        
Employee termination costs $ 2.8 $ 10.7 $ 11.2 $ 19.5
Other restructuring charges $ 6.6 $ 1.1 12.0 $ 3.8
Facility Closures        
Restructuring Cost And Reserve [Line Items]        
Impairment of other long lived assets     $ 3.3  
Business Services        
Restructuring Cost And Reserve [Line Items]        
Number of facilities closed | Facility 3   3  
Gain on sale of previously impaired assets     $ 5.4  
Marketing Solutions        
Restructuring Cost And Reserve [Line Items]        
Number of facilities closed | Facility   1   1
Impairment of other long lived assets   $ 21.5   $ 21.7
Goodwill impairment charges   $ 21.3   $ 21.3