Schedule of Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Oct. 02, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 951,230	$ 745,498
Available-for-sale marketable securities, Unrealized Gains	5,657	2,145
Available-for-sale marketable securities, Unrealized (Losses)	(635)	(4,019)
Available-for-sale marketable securities, Fair Market Value	956,252	743,624
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	458,774	601,660
U.S. Treasury Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	675,745	421,060
Available-for-sale marketable securities, Unrealized Gains	906	65
Available-for-sale marketable securities, Unrealized (Losses)	(341)	(1,167)
Available-for-sale marketable securities, Fair Market Value	676,310	419,958
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	371,188	379,434
Corporate Debt Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	114,752	163,297
Available-for-sale marketable securities, Unrealized Gains	2,755	902
Available-for-sale marketable securities, Unrealized (Losses)	(247)	(2,565)
Available-for-sale marketable securities, Fair Market Value	117,260	161,634
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	43,552	145,373
U.S. Government Agency Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	25,738	84,032
Available-for-sale marketable securities, Unrealized Gains	64	42
Available-for-sale marketable securities, Unrealized (Losses)		(122)
Available-for-sale marketable securities, Fair Market Value	25,802	83,952
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	3,830	55,120
Certificates of Deposit and Time Deposits
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	66,115	43,391
Available-for-sale marketable securities, Unrealized Gains	30	6
Available-for-sale marketable securities, Unrealized (Losses)	(5)	(3)
Available-for-sale marketable securities, Fair Market Value	66,140	43,394
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	14,402	10,527
Commercial Paper
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	52,323	20,298
Available-for-sale marketable securities, Unrealized Gains	15	11
Available-for-sale marketable securities, Unrealized (Losses)	(14)	(1)
Available-for-sale marketable securities, Fair Market Value	52,324	20,308
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	25,317	8,646
Equity And Debt Mutual Funds
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	15,801	12,996
Available-for-sale marketable securities, Unrealized Gains	1,870	1,119
Available-for-sale marketable securities, Unrealized (Losses)	(5)	(161)
Available-for-sale marketable securities, Fair Market Value	17,666	13,954
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	348	2,560
Non-U.S. Government Securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	756	424
Available-for-sale marketable securities, Unrealized Gains	17
Available-for-sale marketable securities, Unrealized (Losses)	(23)
Available-for-sale marketable securities, Fair Market Value	750	$ 424
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 137

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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