Financial Instruments - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016	Dec. 31, 2016
Financial Instruments and Fair Value [Line Items]
Available-for-sale securities, realized loss	$ 100,000	$ 200,000	$ 200,000	$ 300,000
Available-for-sale securities, realized gain	200,000	300,000	500,000	400,000
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	928,688,000		928,688,000		$ 732,979,000
Fair market value of investments with unrealized losses greater than one year	1,800,000		1,800,000		2,900,000
Aggregate loss of investments with unrealized losses greater than one year			200,000		300,000
Fair market value of investments with unrealized losses less than one year	926,900,000		926,900,000		730,100,000
Aggregate loss of investments with unrealized losses less than one year			2,400,000		2,500,000
Gains (losses) on foreign currency transactions	(2,400,000)	6,900,000	(900,000)	10,400,000
Realized (losses) gains on foreign currency contracts	1,600,000	$ (6,900,000)	600,000	$ (10,200,000)
Universal Robots
Financial Instruments and Fair Value [Line Items]
Maximum payment per earn-out			25,000,000
Foreign Exchange Contracts
Financial Instruments and Fair Value [Line Items]
Notional amount of foreign currency forward contracts	$ 94,100,000		94,100,000		83,900,000
Gains (losses) on foreign currency transactions			$ (300,000)		$ (100,000)