Goodwill And Intangible Assets (Narrative) (Details) (USD $)							12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 North American [Member]	Dec. 31, 2011 European [Member]	Dec. 31, 2011 International [Member]	Dec. 31, 2011 Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 259,084,000	$ 263,089,000	$ 84,727,000	$ 198,300,000	$ 57,300,000	$ 3,500,000
Intangible assets totaled	47,100,000
Intangible assets, accumulated amortization	19,800,000
Future amortization expense, 2012							4,300,000
Future amortization expense, 2013							4,200,000
Future amortization expense, 2014							4,200,000
Future amortization expense, 2015							4,200,000
Future amortization expense, 2016							4,000,000
Disposals of goodwill	1,800,000
Disposal of intangible assets	$ 500,000