Shareholders' Equity (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015	Sep. 26, 2015
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment		$ (51,510)	$ 47,727	$ 21,669	$ (150,660)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		(2,030)	2,169	(3,681)	2,293
Other Comprehensive Income (Loss), Unrealized Gain on Derivatives Arising During Period, Net		93	(230)	184	693
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax		(3,844)	(882)	(4,764)	(1,724)
Net change in accumulated other comprehensive income (loss)		$ (48,385)	50,548	$ 22,146	(145,950)
Stock Repurchase Program, Authorized Amount						$ 400,000
Treasury Stock, Shares, Acquired		506,670		1,982,894
Treasury Stock, Value, Acquired, Cost Method		$ 31,060		$ 113,778
Other comprehensive income before reclassifications [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment	[1]	(50,181)	47,890	19,788	(151,338)
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		(2,030)	2,169	(3,681)	2,293
Other Comprehensive Income (Loss), Unrealized Gain on Derivatives Arising During Period, Net		0	(346)	0	550
Other Comprehensive Income (loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (loss) Recognized in Net Periodic Benefit Cost, After Tax		31	35	72	69
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		3,982	600	(28,819)	45,863
Reclassification out of Accumulated Other Comprehensive Income [Member]
Changes In Components Of OCI [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment		(111)	(163)	1,091	678
Other Comprehensive Income (Loss) Unrealized gain (loss) on investment securities, net		0	0	0	0
Other Comprehensive Income (Loss), Unrealized Gain on Derivatives Arising During Period, Net		93	116	184	143
Other Comprehensive Income (loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (loss) Recognized in Net Periodic Benefit Cost, After Tax		$ 3,813	$ 847	$ 4,692	$ 1,655

[1] Includes intra-entity foreign currency transactions that are of a long-term investment nature of $3,982 and $(28,819) for the second quarter and first six months of 2016 and $600 and $45,863 for the second quarter and first six months of 2015, respectively.