Schedule of Reported Available for Sale Marketable Securities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 965,843	$ 855,786
Available-for-sale marketable securities, Unrealized Gain	4,260	3,689
Available-for-sale marketable securities, Unrealized (Loss)	(494)	(1,515)
Available-for-sale marketable securities, Fair Market Value	969,609	857,960
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	212,156	241,760
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	594,500	586,818
Available-for-sale marketable securities, Unrealized Gain	319	85
Available-for-sale marketable securities, Unrealized (Loss)	(18)	(21)
Available-for-sale marketable securities, Fair Market Value	594,801	586,882
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	66,188	137,670
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	371,343	268,968
Available-for-sale marketable securities, Unrealized Gain	3,941	3,604
Available-for-sale marketable securities, Unrealized (Loss)	(476)	(1,494)
Available-for-sale marketable securities, Fair Market Value	374,808	271,078
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 145,968	$ 104,090

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

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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