Derivative Financial Instruments, Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type (Details) (Foreign Exchange Forward [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total assets derivatives, Cash Flow Hedges	$ 1,741	$ 9,799
Total liability derivatives, Cash Flow Hedges	(3,134)	(59)
Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	2,802	11,965
Unrealized losses	(1,073)	(4,187)
Net unrealized gain (loss)	1,729	7,778
Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	12	2,113
Unrealized losses	0	(92)
Net unrealized gain (loss)	12	2,021
Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	20	0
Unrealized losses	(375)	(21)
Net unrealized gain (loss)	(355)	(21)
Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	1,466	12
Unrealized losses	(4,245)	(50)
Net unrealized gain (loss)	(2,779)	(38)
Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	0	0
Unrealized losses	0	(1,104)
Net unrealized gain (loss)	0	(1,104)
Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	469	41
Unrealized losses	(796)	(786)
Net unrealized gain (loss)	$ (327)	$ (745)