Goodwill And Other Intangibles (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill And Other Intangibles [Abstract]
Amortization expense of intangible assets	$ 25,200,000	$ 23,700,000	$ 24,200,000
Estimated amortization expense, 2012	24,000,000
Estimated amortization expense, 2013	22,000,000
Estimated amortization expense, 2014	22,000,000
Estimated amortization expense, 2015	22,000,000
Estimated amortization expense, 2016	22,000,000
Goodwill impairment charge	0
Tradename impairment charges	$ 0