Other Intangible Assets, Net Schedule of Finite-Lived Intangible Assets by Major Class (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	$ 305,888,000		$ 305,888,000		$ 226,580,000
Less accumulated amortization	(135,480,000)		(135,480,000)		(116,730,000)
Other identifiable intangible assets, net	170,408,000		170,408,000		109,850,000
Amortization expense for finite-lived intangible assets	8,300,000	4,800,000	19,300,000	14,900,000
Finite Lived Intangible Assets Reclassification Related To Sale Of Business Unit	2,800,000		2,800,000		22,800,000
Impairment of Intangible Assets, Finite-lived	18,400,000
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(104,220,000)	(142,479,000)	(111,125,000)	(93,688,000)
Impairment of Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	17,100,000
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	274,156,000		274,156,000		209,004,000
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	7,960,000		7,960,000		8,033,000
Trade Names and Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	23,251,000		23,251,000		9,543,000
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Other identifiable intangible assets, gross	$ 521,000		$ 521,000		$ 0