Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Amortization of intangible assets	$ 12.4	$ 14.6	$ 15.7
Estimated amortization expense - 2012	10.3
Estimated amortization expense - 2013	9.1
Estimated amortization expense - 2014	8.3
Estimated amortization expense - 2015	7.4
Estimated amortization expense - 2016	6.6
Estimated amortization expense, thereafter	$ 4.7
Minimum [Member] | Customer Relationships [Member]
Finite lived intangible assets useful life	3 years 6 months
Maximum [Member] | Customer Relationships [Member]
Finite lived intangible assets useful life	10 years