Shareholders' Equity (Schedule of Stock by Class) (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended		3 Months Ended					12 Months Ended			0 Months Ended																			0 Months Ended	12 Months Ended
	Dec. 28, 2012	Dec. 14, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2012 stockclass	Dec. 31, 2011	Dec. 31, 2010	Jul. 02, 2010 World Color Press [Member]	Dec. 31, 2012 Common Class A [Member]	Dec. 31, 2011 Common Class A [Member]	Dec. 31, 2010 Common Class A [Member]	Dec. 31, 2012 Common Class B [Member]	Dec. 31, 2011 Common Class B [Member]	Dec. 31, 2010 Common Class B [Member]	Dec. 31, 2012 Common Class C [Member]	Dec. 31, 2011 Common Class C [Member]	Dec. 31, 2010 Common Class C [Member]	Dec. 31, 2012 Common Stock [Member] Common Class A [Member]	Dec. 31, 2011 Common Stock [Member] Common Class A [Member]	Dec. 31, 2010 Common Stock [Member] Common Class A [Member]	Dec. 31, 2012 Common Stock [Member] Common Class B [Member]	Dec. 31, 2011 Common Stock [Member] Common Class B [Member]	Dec. 31, 2010 Common Stock [Member] Common Class B [Member]	Dec. 31, 2012 Common Stock [Member] Common Class C [Member]	Dec. 31, 2011 Common Stock [Member] Common Class C [Member]	Dec. 31, 2010 Common Stock [Member] Common Class C [Member]	Sep. 06, 2011 Treasury Stock [Member]	Dec. 31, 2012 Treasury Stock [Member]	Dec. 31, 2011 Treasury Stock [Member]	Dec. 31, 2012 Treasury Stock [Member] Common Class A [Member]	Dec. 31, 2011 Treasury Stock [Member] Common Class A [Member]	Dec. 31, 2010 Treasury Stock [Member] Common Class A [Member]	Dec. 31, 2012 Treasury Stock [Member] Common Class B [Member]	Dec. 31, 2011 Treasury Stock [Member] Common Class B [Member]	Dec. 31, 2010 Treasury Stock [Member] Common Class B [Member]	Dec. 31, 2012 Treasury Stock [Member] Common Class C [Member]	Dec. 31, 2011 Treasury Stock [Member] Common Class C [Member]	Dec. 31, 2010 Treasury Stock [Member] Common Class C [Member]	Dec. 31, 2012 Common Stock Excluding Treasury Stock [Member] Common Class A [Member]	Dec. 31, 2011 Common Stock Excluding Treasury Stock [Member] Common Class A [Member]	Dec. 31, 2010 Common Stock Excluding Treasury Stock [Member] Common Class A [Member]	Dec. 31, 2012 Common Stock Excluding Treasury Stock [Member] Common Class B [Member]	Dec. 31, 2011 Common Stock Excluding Treasury Stock [Member] Common Class B [Member]	Dec. 31, 2010 Common Stock Excluding Treasury Stock [Member] Common Class B [Member]	Dec. 31, 2012 Common Stock Excluding Treasury Stock [Member] Common Class C [Member]	Dec. 31, 2011 Common Stock Excluding Treasury Stock [Member] Common Class C [Member]	Dec. 31, 2010 Common Stock Excluding Treasury Stock [Member] Common Class C [Member]
Class of Stock [Line Items]
Number of Classes of Common Stock								3
Common stock par value												$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025
Authorized Shares												80,000,000	80,000,000	80,000,000	80,000,000	80,000,000	80,000,000	20,000,000	20,000,000	20,000,000
Issued Common Stock												40,000,000	40,000,000		15,000,000	15,000,000		200,000	200,000		40,000,000	40,000,000	40,000,000	15,000,000	15,000,000	15,000,000	500,000	200,000	200,000				7,000,000	7,600,000	7,400,000	800,000	800,000	800,000	500,000	200,000	200,000	33,000,000	32,400,000	32,600,000	14,200,000	14,200,000	14,200,000	0	0	0
Issued Shares Classified as Redeemable Equity														0				0	300,000	300,000
Total Issued Shares												40,000,000	40,000,000	40,000,000	15,000,000	15,000,000	15,000,000	500,000	500,000	500,000
Preferred stock authorized						500,000		500,000	500,000	500,000
Preferred stock par value						$ 0.01		$ 0.01	$ 0.01	$ 0.01
Preferred stock issued						0		0	0	0
Dividend Amount per Share	$ 2.00	$ 0.25	$ 0.25	$ 0.25	$ 0.25	$ 0.20	$ 0.20	$ 3	$ 0.6	$ 0.5
Cash distribution from World Color Press acquisition											$ 140.0
Stock repurchase program, authorized amount																														100.0
Purchase of tresury stock, shares																															400,000	400,000
Purchase of treasury stock																															$ 91.8	$ 8.2