Acquisitions and Dispositions - Schedule of Purchase Price Allocation for Acquisitions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$ 1,706.6	$ 1,743.6	$ 1,436.3
Less: gain on bargain purchase	9.5
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
Consolidated Graphics, Esselte and MultiCorpora
Business Acquisition [Line Items]
Accounts receivable	242.0
Inventories	89.6
Prepaid expenses and other current assets	17.5
Property, plant and equipment	337.0
Other intangible assets	205.0
Other noncurrent assets	11.9
Goodwill	300.1
Accounts payable and accrued liabilities	(221.0)
Other noncurrent liabilities	(57.5)
Deferred taxes-net	(96.6)
Total purchase price-net of cash acquired	828.0
Less: debt assumed	118.4
Less: value of common stock issued	319.0
Less: gain on bargain purchase	9.5
Net cash paid	$ 381.1