Annual report pursuant to Section 13 and 15(d)

Derivative Instruments and Hedging Activities (Details 3)

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Derivative Instruments and Hedging Activities (Details 3) (Selling, general and administrative expenses [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Foreign exchange currency contracts [Member] | Derivatives not designated as hedging instruments [Member]
     
Derivatives not designated as cash flow hedging instruments:      
Amount of Gain (Loss) Recognized in Income $ 2.7 $ (9.4) $ (15.8)
Foreign exchange currency contracts relating to intercompany management fee hedges [Member] | Designated as Hedging Instrument [Member]
     
Derivatives not designated as cash flow hedging instruments:      
Amount of Gain (Loss) Recognized in Income     $ (0.3)