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	Mar. 31, 2019	Dec. 30, 2018	Apr. 01, 2018
Foreign Exchange Forward [Member]
Derivative [Line Items]
Notional amount of derivative	$ 776,642	$ 792,840	$ 1,273,262
Fair value of hedged item	30,197	26,017	(35,732)
Inventory Purchases [Member]
Derivative [Line Items]
Notional amount of derivative	486,999	468,305	718,925
Fair value of hedged item	21,649	15,089	(31,453)
Sales [Member]
Derivative [Line Items]
Notional amount of derivative	263,221	298,194	375,441
Fair value of hedged item	8,358	11,232	7,323
Royalties and Other [Member]
Derivative [Line Items]
Notional amount of derivative	26,422	26,341	178,896
Fair value of hedged item	$ 190	$ (304)	$ (11,602)