Fair Value Measurements, Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Mar. 30, 2013	Dec. 31, 2012	Mar. 30, 2013 Foreign Currency Exchange Contracts [Member] Cost of Revenues [Member] Derivatives Not Designated as Fair Value Hedges	Mar. 31, 2012 Foreign Currency Exchange Contracts [Member] Cost of Revenues [Member] Derivatives Not Designated as Fair Value Hedges	Mar. 30, 2013 Foreign Currency Exchange Contracts [Member] Other Expense [Member] Derivatives Not Designated as Fair Value Hedges	Mar. 31, 2012 Foreign Currency Exchange Contracts [Member] Other Expense [Member] Derivatives Not Designated as Fair Value Hedges	Mar. 30, 2013 Foreign Currency Exchange Contracts [Member] Derivatives Not Designated as Fair Value Hedges Other Current Assets [Member]	Dec. 31, 2012 Foreign Currency Exchange Contracts [Member] Derivatives Not Designated as Fair Value Hedges Other Current Assets [Member]	Mar. 30, 2013 Foreign Currency Exchange Contracts [Member] Derivatives Not Designated as Fair Value Hedges Accrued Expense [Member]	Dec. 31, 2012 Foreign Currency Exchange Contracts [Member] Derivatives Not Designated as Fair Value Hedges Accrued Expense [Member]
Derivatives Fair Value [Line Items]
Notional Amount Of Derivatives	$ 873.0	$ 719.0
Fair Value - Assets
Derivative Asset, Fair Value							2.1	1.6
Fair Value - Liabilities
Derivative Liability, Fair Value									0.7	0.8
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized			$ 1.0	$ 1.3	$ 16.7	$ (0.5)