Shareholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other		$ 133,625	$ (51,510)	$ 170,480	$ 21,669
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		1,554	(2,030)	3,282	(3,681)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		(547)	93	(450)	184
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		(505)	(3,844)	(911)	(4,764)
Net change in accumulated other comprehensive income (loss)		132,537	(48,385)	171,036	22,146
Other comprehensive income before reclassifications [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other	[1]	132,337	(50,181)	169,940	19,788
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		1,554	(2,030)	3,282	(3,681)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		(647)	0	(647)	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		(48)	31	(43)	72
Other comprehensive income before reclassifications [Member] | Intra-entity foreign currency transactions [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other		(36,503)	3,982	(36,180)	(28,819)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other		(1,312)	(111)	(2,647)	1,091
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		0	0	0	0
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		100	93	197	184
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		$ 553	$ 3,813	$ 954	$ 4,692

[1] Includes intra-entity foreign currency transactions that are of a long-term investment nature of $(36,503) and $(36,180) for the second quarter and first six months of 2017 and $3,982 and $(28,819) for the second quarter and first six months of 2016, respectively.