Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Intangible assets subjected to amortization			$ 0.9
Identifiable intangible assets minimum useful life (years)			1 year 6 months
Amortization expense	3.7	3.3	7.1	6.8
Estimated future amortization expense in year 2012	18.4		18.4
Estimated future amortization expense in year 2013	14.2		14.2
Estimated future amortization expense in year 2014	12.4		12.4
Estimated future amortization expense in year 2015	11.4		11.4
Estimated future amortization expense in year 2016	10.0		10.0
Estimated future amortization expense thereafter	$ 9.8		$ 9.8
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets minimum useful life (years)			1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets minimum useful life (years)			20 years