Acquisitions and Dispositions - Schedule of Purchase Price Allocation for Acquisitions (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015	Jun. 08, 2015
Business Acquisition [Line Items]
Goodwill	$ 1,747.1	$ 1,743.6
Courier Corporation, 3 Insignificant Acquisitions
Business Acquisition [Line Items]
Accounts receivable			$ 36.2
Inventories			59.0
Prepaid expenses and other current assets			38.8
Property, plant and equipment			163.8
Other intangible assets			108.8
Other noncurrent assets			7.9
Goodwill			66.3
Accounts payable and accrued liabilities			(24.6)
Other noncurrent liabilities			(10.5)
Deferred taxes—net			(83.7)
Total purchase price-net of cash acquired			362.0
Less: debt assumed			80.2
Less: settlement of accounts receivable for acquisition of a business			8.6
Less: value of common stock issued			155.2
Net cash paid			$ 118.0