Other Identifiable Intangible Assets Schedule of Finite-Lived Intangible Assets by Major Class (Details) (USD $)	3 Months Ended										12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011		Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010		Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	$ 308,412,000					$ 226,580,000					$ 308,412,000	$ 226,580,000
Less accumulated amortization	(144,047,000)					(116,730,000)					(144,047,000)	(116,730,000)
Other identifiable intangible assets, net	164,365,000					109,850,000					164,365,000	109,850,000
Amortization expense for finite-lived intangible assets											28,300,000	19,700,000	19,700,000
Finite Lived Intangible Assets Reclassification Related To Sale Of Business Unit	2,600,000					22,800,000					2,600,000	22,800,000
Impairment of Intangible Assets, Finite-lived											22,000,000
(Loss) income from discontinued operations, net of tax	(15,999,000)	(104,220,000)	(8,556,000)	[1]	1,651,000	10,152,000	(142,479,000)	27,004,000	[2]	21,787,000	(127,124,000)	(83,536,000)	150,658,000
Customer lists [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	276,112,000					209,004,000					276,112,000	209,004,000
Noncompete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	7,898,000					8,033,000					7,898,000	8,033,000
Trade names and licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	24,402,000					9,543,000					24,402,000	9,543,000
Marketing Services Unit [Member] | Non Cash Impairment [Member]
Finite-Lived Intangible Assets [Line Items]
Discontinued operations, non-cash impairment charge											10,600,000
Marketing Services Unit [Member] | Non Cash Impairment [Member] | Impairment of Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Discontinued operations, non-cash impairment charge											$ 17,100,000

[1] Amounts for the quarter ended June 30, 2011, have been revised to reflect financial statement revisions net of tax of $1.8 million of income, which impacted earnings per share by $0.02 per share on both a basic and diluted basis in the second quarter of 2011.

[2] ) Amounts for the quarter ended June 30, 2010, have been revised to reflect financial statement revisions net of tax of $2.8 million of income, which impacted earnings per share by $0.02 per share on both a basic and diluted basis in the second quarter of 2010.