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Financial Instruments (Schedule Of Location And Amounts Of Gains And Losses On The Derivative Instrument Designated As A Fair Value Hedge) (Details) (Interest Expense [Member], Interest Rate Swap Contract [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Interest Expense [Member] | Interest Rate Swap Contract [Member]
   
Derivative Instruments, Gain (Loss) [Line Items]    
Gain Recognized on Swap $ 11.4 $ 0.7
(Loss) Recognized on Long-Term Debt $ (11.4) $ (0.7)