Derivative Instruments And Hedging Activities (Gains And Losses On Derivatives Designated As Hedging Instruments) (Details) (Cash Flow Hedging [Member], USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Derivative [Line Items]
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)	$ (0.1)	$ (1.5)	$ (0.5)	$ (3.5)
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	(0.9)	(0.9)	(2.4)	(3.0)
Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)				(0.2)
Interest Expense [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Amount of Gain/(Loss) Recognized in AOCI on Derivative (Effective Portion)	(0.1)	(1.1)	(0.5)	(3.6)
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	(0.9)	(0.7)	(2.2)	(2.3)
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)		(0.4)		0.1
Amount of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)		(0.2)	(0.2)	(0.7)
Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)				$ (0.2)