Restructuring, Impairment and Other Charges - Other Charges - Narrative (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($) Pension_Plan	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Pension_Plan	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Cost And Reserve [Line Items]
Other Charges	$ 1.5	$ 1.3	$ 4.3	$ 23.1
Accrued liabilities	793.3		793.3		$ 780.4
Other noncurrent liabilities	$ 359.2		$ 359.2		$ 373.9
Courier Corporation
Restructuring Cost And Reserve [Line Items]
Restructuring, integration charges				19.1
Number of multi-employer pension plans | Pension_Plan	2		2
Multi-employer pension plan company's contributions percentage			85.00%
Multi-employer critical zone identification contribution percentage			65.00%
Multi-employer pension plan withdrawal obligations
Restructuring Cost And Reserve [Line Items]
Other Charges	$ 1.5	$ 1.3	$ 4.3	$ 23.1
Accrued liabilities	11.0		11.0
Other noncurrent liabilities	$ 78.4		$ 78.4