Derivative Financial Instruments, Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type (Details) (Foreign Exchange Forward [Member], USD $) In Thousands, unless otherwise specified	Sep. 29, 2013	Dec. 30, 2012	Sep. 30, 2012
Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	$ 2,923	$ 2,802	$ 5,677
Unrealized losses	(1,572)	(1,073)	(2,692)
Net unrealized gain (loss)	1,351	1,729	2,985
Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	109	12	2,448
Unrealized losses	(11)	0	(360)
Net unrealized gain (loss)	98	12	2,088
Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	3,023	1,466	2,816
Unrealized losses	(8,652)	(4,245)	(4,617)
Net unrealized gain (loss)	(5,629)	(2,779)	(1,801)
Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	191	20	104
Unrealized losses	(2,886)	(375)	(162)
Net unrealized gain (loss)	(2,695)	(355)	(58)
Not Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	1,761	0	1,119
Unrealized losses	(1,107)	0	(504)
Net unrealized gain (loss)	654	0	615
Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	298	0	0
Unrealized losses	(80)	0	0
Net unrealized gain (loss)	218	0	0
Not Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	0	469	0
Unrealized losses	0	(796)	0
Net unrealized gain (loss)	0	(327)	0
Not Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	0	0	74
Unrealized losses	0	0	(527)
Net unrealized gain (loss)	$ 0	$ 0	$ (453)