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Goodwill and Other Intangible Assets - Schedule of Changes in the Carrying Value of Goodwill by Segment (Detail) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Goodwill [Line Items]    
Goodwill gross $ 4,769.5 $ 4,768.3
Accumulated impairment losses (2,982.2) (3,024.7)
Goodwill 1,787.3 1,743.6
Acquisitions 41.0  
Foreign exchange and other adjustments 2.7  
Publishing and Retail Services    
Goodwill [Line Items]    
Goodwill gross 739.2 739.2
Accumulated impairment losses (688.0) (688.0)
Goodwill 51.2 51.2
Foreign exchange and other adjustments 0.0  
Variable Print    
Goodwill [Line Items]    
Goodwill gross 1,955.6 1,914.0
Accumulated impairment losses (1,105.2) (1,105.2)
Goodwill 850.4 808.8
Acquisitions 41.0  
Foreign exchange and other adjustments 0.6  
Strategic Services    
Goodwill [Line Items]    
Goodwill gross 990.8 991.5
Accumulated impairment losses (218.7) (219.7)
Goodwill 772.1 771.8
Foreign exchange and other adjustments 0.3  
International    
Goodwill [Line Items]    
Goodwill gross 1,083.9 1,123.6
Accumulated impairment losses (970.3) (1,011.8)
Goodwill 113.6 $ 111.8
Foreign exchange and other adjustments $ 1.8