Changes in Accumulated Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ 1,828,659
Other comprehensive income before reclassifications, net of tax			26,442	$ 10,734
Amounts reclassified from accumulated other comprehensive income, net of tax			(313)	(297)
Other comprehensive income (loss)	$ 16,815	$ (2,741)	26,129	10,437
Ending balance	2,048,648		2,048,648
Foreign currency translation reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(21,921)	(8,759)
Other comprehensive income before reclassifications, net of tax			24,944	5,229
Other comprehensive income (loss)			24,944	5,229
Ending balance	3,023	(3,530)	3,023	(3,530)
Unrealized Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(60)	(1,414)
Other comprehensive income before reclassifications, net of tax			1,498	5,446
Amounts reclassified from accumulated other comprehensive income, net of tax			(177)	(134)
Other comprehensive income (loss)			1,321	5,312
Ending balance	1,261	3,898	1,261	3,898
Amortization of prior service credit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			1,767	2,029
Other comprehensive income before reclassifications, net of tax				59
Amounts reclassified from accumulated other comprehensive income, net of tax	(68)	(83)	(136)	(163)
Other comprehensive income (loss)			(136)	(104)
Ending balance	1,631	1,925	1,631	1,925
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(20,214)	(8,144)
Amounts reclassified from accumulated other comprehensive income, net of tax	(151)	(134)	(313)	(297)
Ending balance	$ 5,915	$ 2,293	$ 5,915	$ 2,293