Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended		6 Months Ended				1 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 U.S. Print and Related Services	Jun. 30, 2013 Presort Solutions U.S. Print and Related Services	Dec. 28, 2012 Presort Solutions U.S. Print and Related Services	Jun. 30, 2013 Meisel Photographic Corporation U.S. Print and Related Services	Jun. 30, 2013 Express Postal Options International U.S. Print and Related Services	Sep. 06, 2012 Express Postal Options International U.S. Print and Related Services	Sep. 06, 2012 Express Postal Options International U.S. Print and Related Services Maximum	Aug. 31, 2012 Edgar Online U.S. Print and Related Services	Jun. 30, 2013 Edgar Online U.S. Print and Related Services	Aug. 14, 2012 Edgar Online U.S. Print and Related Services	Jun. 30, 2013 Presort, Meisel, XPO and Edgar Online Acquisitions	Dec. 31, 2012 Presort, Meisel, XPO and Edgar Online Acquisitions	Dec. 17, 2012 Meisel Photographic Corporation U.S. Print and Related Services
Business Acquisition [Line Items]
Acquisition-related expenses	$ 0.1	$ 0.5	$ 1.1	$ 0.8
Effective date of acquisition						Dec. 28, 2012		Dec. 17, 2012	Sep. 06, 2012				Aug. 14, 2012
Purchase price of acquisition							11.9			23.4				71.5		132.2	25.4
Cash Acquired from acquisition							0.8			1.0				2.1			1.0
Repayment of debt assumed in acquisition												1.4
Debt Assumed														1.4		1.4
Goodwill related to acquisitions tax deductible															23.7
Business acquisition, pro forma net sales		2,596.0		5,187.7
Maximum entitled cash payments											4.0
Fair value of the contingent consideration					$ 2.9					$ 3.5						$ 3.5