Derivative Financial Instruments, Notional Amounts and Fair Values of Foreign Currency Forward Contracts Designated as Cash Flow Hedging Instruments (Details) - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	Sep. 25, 2016	Dec. 27, 2015	Sep. 27, 2015
Foreign Exchange Forward [Member]
Derivative [Line Items]
Notional amount of derivative	$ 1,597,050	$ 1,532,198	$ 1,394,028
Fair value of hedged item	18,992	107,438	118,558
Inventory Purchases [Member]
Derivative [Line Items]
Notional amount of derivative	1,045,400	1,380,488	1,122,827
Fair value of hedged item	23,662	108,521	124,422
Sales [Member]
Derivative [Line Items]
Notional amount of derivative	318,283	97,350	213,841
Fair value of hedged item	(559)	803	(3,352)
Royalties and Other [Member]
Derivative [Line Items]
Notional amount of derivative	233,367	54,360	57,360
Fair value of hedged item	$ (4,111)	$ (1,886)	$ (2,512)