Schedule of Purchase Price Allocation for Acquisitions (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$ 1,736.6	$ 1,436.3
Less: gain on bargain purchase	10.5
Esselte Multi Corpora And Consolidated Graphics Acquisition
Business Acquisition [Line Items]
Accounts receivable	241.4
Inventories	89.6
Prepaid expenses and other current assets	16.3
Property, plant and equipment	335.0
Other intangible assets	204.9
Other noncurrent assets	11.9
Goodwill	300.2
Accounts payable and accrued liabilities	(217.4)
Other noncurrent liabilities	(57.5)
Deferred taxes-net	(97.5)
Total purchase price-net of cash acquired	826.9
Less: debt assumed	118.4
Less: value of common stock issued	319.0
Less: gain on bargain purchase	10.5
Less: amount due for net working capital settlement	2.8
Net cash paid	$ 376.2