Shareholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 01, 2017	Apr. 02, 2016
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other		$ 36,855	$ 73,179
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		1,728	(1,651)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		97	91
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		(406)	(920)
Net change in accumulated other comprehensive income (loss)		38,499	70,531
Other comprehensive income before reclassifications [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other	[1]	37,603	69,969
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		1,728	(1,651)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		0	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		5	41
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		7,290	(32,801)
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		(1,335)	1,202
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		0	0
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		97	91
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		$ 401	$ 879

[1] Includes intra-entity foreign currency transactions that are of a long-term investment nature of $7,290 and $(32,801) for the first quarter of 2017 and 2016, respectively.