Derivative Financial Instruments, Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type (Details) - Foreign Exchange Forward [Member] - USD ($) $ in Thousands	Sep. 27, 2015	Dec. 28, 2014	Sep. 28, 2014
Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	$ 81,718	$ 46,594	$ 24,242
Unrealized losses	(9,717)	(11,508)	(6,356)
Net unrealized gain (loss)	72,001	35,086	17,886
Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	48,111	34,234	23,127
Unrealized losses	(989)	(172)	(964)
Net unrealized gain (loss)	47,122	34,062	22,163
Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	62	447	2,519
Unrealized losses	(566)	(725)	(5,539)
Net unrealized gain (loss)	(504)	(278)	(3,020)
Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	0	0	22
Unrealized losses	(61)	0	(26)
Net unrealized gain (loss)	(61)	0	(4)
Not Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	93	0	4,876
Unrealized losses	0	0	(3,450)
Net unrealized gain (loss)	93	0	1,426
Not Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	360	1,733	0
Unrealized losses	(493)	(4,046)	0
Net unrealized gain (loss)	(133)	(2,313)	0
Not Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	0	0	303
Unrealized losses	0	0	(705)
Net unrealized gain (loss)	$ 0	$ 0	$ (402)