Derivative Financial Instruments (Effect Of Derivative Instruments Designated As Hedging Instruments On The Consolidated Statements Of Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Cash Flow Hedges [Member]
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized in Accumulated OCI, net (Effective Portion)				$ 1.8
Cash Flow Hedges [Member] | Cost Of Revenue [Member]
Derivatives, Fair Value [Line Items]
Gain Reclassified from Accumulated OCI into Total Cost of Revenue (Effective Portion)				0.6
Cash Flow Hedges [Member] | Other Income [Member]
Derivatives, Fair Value [Line Items]
(Loss) Gain Recognized in Other (Expense) Income, net: Excluded from Effectiveness Testing
Net Investment Hedges [Member]
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized in Accumulated OCI, net (Effective Portion)	4.1	(5.1)	(5.9)	5.5
(Loss) Gain Recognized in Other (Expense) Income, net: Excluded from Effectiveness Testing		0.1
Net Investment Hedges [Member] | Other Income [Member]
Derivatives, Fair Value [Line Items]
(Loss) Gain Recognized in Other (Expense) Income, net: Excluded from Effectiveness Testing	$ (0.3)		$ (0.5)