Derivative Financial Instruments (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Derivative [Line Items]
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 0	$ 0	$ 0	$ 0
Foreign Currency Forward Contracts [Member] | Maximum [Member]
Derivative [Line Items]
Derivative contract term, months (in months)			6 months
Foreign Currency Forward Contracts [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Approximate number of derivatives per quarter (in derivatives)	5		5
Cash flow hedge	7,000,000		7,000,000
Number of months taken by the company to reclass the amounts recorded in other comprehensive income to earnings (in months)			12 months
Hedge period of forecasted hedge transaction (in days)			60 days
Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedges [Member] | Minimum [Member]
Derivative [Line Items]
Derivative contract term, months (in months)			3 months
Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedges [Member] | Maximum [Member]
Derivative [Line Items]
Derivative contract term, months (in months)			5 months
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Approximate number of derivatives per quarter (in derivatives)	13		13
Non-designated hedge	$ 2,000,000		$ 2,000,000
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member] | Minimum [Member]
Derivative [Line Items]
Derivative contract term, months (in months)			1 month
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Currency Forward Contracts [Member] | Maximum [Member]
Derivative [Line Items]
Derivative contract term, months (in months)			5 months