Derivative Instruments And Hedging Activities (Gains And Losses On Derivatives Designated As Hedging Instruments) (Details) (Cash Flow Hedging [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative [Line Items]
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)	$ (0.1)
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	(0.6)	(0.9)
Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
FX Options [Member] | Revenue [Member]
Derivative [Line Items]
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)		(0.2)
Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Interest Rate Swaps [Member] | Interest Expense [Member]
Derivative [Line Items]
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)	(0.1)
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	(0.6)	(0.7)
Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)