Derivative Financial Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective portion, amount of gains (losses) reclassified from other comprehensive earnings into earnings	$ 4,217	$ 2,077	$ 5,744	$ 5,381
Ineffective portion, amount of gains (losses) reclassified from other comprehensive earnings into earnings	233	47	165	61
Cash Flow Hedging [Member] | Cost of Sales [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective portion, amount of gains (losses) reclassified from other comprehensive earnings into earnings	1,614	3,431	1,650	6,372
Cash Flow Hedging [Member] | Royalty Expense[Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective portion, amount of gains (losses) reclassified from other comprehensive earnings into earnings	(303)	824	(347)	1,830
Cash Flow Hedging [Member] | Sales [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective portion, amount of gains (losses) reclassified from other comprehensive earnings into earnings	2,906	(2,178)	4,441	(2,821)
Fair Value Hedging [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$ 2,467	$ (726)	$ 2,557	$ (2,194)