Derivative Financial Instruments, Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type (Details) - Foreign Exchange Forward [Member] - USD ($) $ in Thousands	Apr. 02, 2017	Dec. 25, 2016	Mar. 27, 2016
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Net unrealized gain (loss)	$ (27)	$ 4,657	$ (141)
Not Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	0	5,854	0
Unrealized losses	0	(1,197)	0
Net unrealized gain (loss)	0	4,657	0
Not Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	289	0	321
Unrealized losses	(316)	0	(462)
Net unrealized gain (loss)	(27)	0	(141)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Net unrealized gain (loss)	35,449	71,928	65,929
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Prepaid expenses and other current assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	23,241	34,265	53,774
Unrealized losses	(3,204)	(2,075)	(6,890)
Net unrealized gain (loss)	20,037	32,190	46,884
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	39,032	51,839	26,454
Unrealized losses	(3,052)	(792)	(3,618)
Net unrealized gain (loss)	35,980	51,047	22,836
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	9,041	8,481	1,900
Unrealized losses	(28,591)	(19,790)	(3,086)
Net unrealized gain (loss)	(19,550)	(11,309)	(1,186)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Unrealized gains	149	0	1,349
Unrealized losses	(1,167)	0	(3,954)
Net unrealized gain (loss)	$ (1,018)	$ 0	$ (2,605)