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Intangible Assets And Goodwill (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
Apr. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]          
Net book value of intangible assets sold under plan for sale and partial leaseback         $ 14.4
Contributed intangible assets 336.3        
Net book value of intangible assets sold 9.4        
Amortization of purchased intangibles $ 31.3 $ 33.0 $ 64.1 $ 66.2