Derivative Financial Instruments, Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Apr. 01, 2012	Mar. 27, 2011	Dec. 25, 2011
Derivatives, Fair Value [Line Items]
Total assets derivatives, Cash Flow Hedges	$ 1,779	$ 2,458	$ 9,799
Total liability derivatives, Cash Flow Hedges	(4,824)	(33,588)	(59)
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	2,720	3,977	11,965
Unrealized losses	(948)	(1,519)	(4,187)
Net unrealized gain (loss)	1,772	2,458	7,778
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	7	0	2,113
Unrealized losses	0	0	(92)
Net unrealized gain (loss)	7	0	2,021
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	2,981	7,981	12
Unrealized losses	(6,956)	(19,992)	(50)
Net unrealized gain (loss)	(3,975)	(12,011)	(38)
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Other Liability Member
Derivatives, Fair Value [Line Items]
Unrealized gains	0	17	0
Unrealized losses	(849)	(21,594)	(21)
Net unrealized gain (loss)	(849)	(21,577)	(21)
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	42	80	41
Unrealized losses	(124)	(91)	(786)
Net unrealized gain (loss)	(82)	(11)	(745)
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Other Liability Member
Derivatives, Fair Value [Line Items]
Unrealized gains	0	0	0
Unrealized losses	(1,148)	0	(1,104)
Net unrealized gain (loss)	$ (1,148)	$ 0	$ (1,104)