Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Financial Instruments and Fair Value [Line Items]

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Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer.

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This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

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Amount of unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 320
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This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This element represents the amount of any change recognized during the period in the high-end of the estimated range of outcomes (undiscounted) of a liability assumed in a business combination arising from an item of contingent consideration.

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Financial Instruments - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Dec. 31, 2016
Financial Instruments and Fair Value [Line Items]
Available-for-sale securities, realized loss	$ 0	$ 100,000	$ 300,000	$ 400,000
Available-for-sale securities, realized gain	200,000	$ 700,000	700,000	$ 1,200,000
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	1,243,640,000		1,243,640,000		$ 732,979,000
Fair market value of investments with unrealized losses greater than one year	113,300,000		113,300,000		2,900,000
Aggregate loss of investments with unrealized losses greater than one year			900,000		300,000
Fair market value of investments with unrealized losses less than one year	1,130,300,000		1,130,300,000		730,100,000
Aggregate loss of investments with unrealized losses less than one year			1,400,000		2,500,000
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	$ 79,200,000		$ 79,200,000		$ 83,900,000