Shareholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016	Sep. 26, 2015
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other		$ 16,336	$ (34,931)	$ 38,005	$ (185,591)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		1,273	(2,553)	(2,408)	(260)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		94	89	278	782
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		(814)	(883)	(5,578)	(2,607)
Net change in accumulated other comprehensive income (loss)		$ 18,049	(36,512)	$ 40,195	(182,462)
Stock Repurchase Program, Authorized Amount			400,000		400,000
Treasury Stock, Shares, Acquired		1,812,545		3,795,439
Treasury Stock, Value, Acquired, Cost Method		$ 117,148		$ 230,926
Other comprehensive income before reclassifications [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment and Other	[1]	15,822	(35,575)	35,610	(186,913)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		1,273	(2,553)	(2,408)	(260)
Other Comprehensive Income, Unrealized Gain on Derivatives Arising During Period, Net		0	0	0	550
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		25	36	97	105
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		(9,273)	19,887	(38,092)	27,821
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		46	644	1,137	1,322
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		94	89	278	232
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		$ 789	$ 847	$ 5,481	$ 2,502

[1] Includes intra-entity foreign currency transactions that are of a long-term investment nature of $(9,273) and $(38,092) for the third quarter and first nine months of 2016 and $19,887 and $27,821 for the third quarter and first nine months of 2015, respectively.