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Derivatives And Hedging Activities (Details 1) (USD $)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Effect of derivative instruments on condensed consolidated statement of operations        
Derivative Instruments, Gain (Loss) Recognized in Income, Net, Total $ (3.0) $ 15.8 $ 3.0 $ (8.7)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
       
Effect of derivative instruments on condensed consolidated statement of operations        
Derivative Instruments, Gain (Loss) Recognized in Income, Net, Total 0.1 (0.2) 0.1 (0.3)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
       
Effect of derivative instruments on condensed consolidated statement of operations        
Derivative Instruments, Gain (Loss) Recognized in Income, Net, Total 1.4 1.2 2.3 2.1
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
       
Effect of derivative instruments on condensed consolidated statement of operations        
Derivative Instruments, Gain (Loss) Recognized in Income, Net, Total $ (4.5) $ 14.8 $ 0.6 $ (10.5)