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Financial Instruments (Details 1) (Derivatives Not Designated As Hedging Instruments [Member], FX Contracts [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Derivatives Not Designated As Hedging Instruments [Member] | FX Contracts [Member]
       
Effects of Derivative Financial Instruments On Income And Other Comprehensive Income (Loss)        
Amount of Gain (Loss) Recognized in Foreign Currency (Gains) Losses, Net $ 0.5 $ (1.2) $ (1.1) $ (1.8)