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Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				3 Months Ended		3 Months Ended			1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 Presort Solutions Us Print And Related Services	Dec. 28, 2012 Presort Solutions Us Print And Related Services	Mar. 31, 2013 Meisel Photographic Corporation Us Print And Related Services	Dec. 17, 2012 Meisel Photographic Corporation Us Print And Related Services	Mar. 31, 2013 Express Postal Options International Us Print And Related Services	Sep. 06, 2012 Express Postal Options International Us Print And Related Services	Sep. 06, 2012 Express Postal Options International Us Print And Related Services Maximum	Aug. 31, 2012 Edgar Online Us Print And Related Services	Mar. 31, 2013 Edgar Online Us Print And Related Services	Aug. 14, 2012 Edgar Online Us Print And Related Services	Mar. 31, 2013 Presort, Meisel, XPO and EDGAR Online acquisitions	Dec. 31, 2012 Presort, Meisel, XPO and EDGAR Online acquisitions
Business Acquisition [Line Items]
Effective date of acquisition			Dec. 28, 2012		Dec. 17, 2012		Sep. 06, 2012				Aug. 14, 2012
Purchase price of acquisition				$ 11.9		$ 25.4		$ 23.4				$ 71.5		$ 132.2
Cash acquired from acquisition				0.8		1.0		1.0				2.1
Maximum entitled cash payments									4.0
Fair value of the contingent consideration								3.5						3.5
Repayment of debt assumed in acquisition										1.4
Debt Assumed												1.4		1.4
Acquisition-related expenses	1.0	0.3
Goodwill related to acquisitions tax deductible													23.7
Business acquisition, pro forma net sales		$ 2,591.7