Financial Instruments And Derivatives (Schedule Of Available-For-Sale Of Marketable Securities) (Details) (USD $) In Thousands	Jul. 03, 2011	Dec. 31, 2010
Available-for-sale marketable securities, Cost	$ 1,046,645	$ 932,631
Available-for-sale Securities, Unrealized Gain	3,063	2,268
Available-for-sale marketable securities, Unrealized (Loss)	(150)	(692)
Available-for-sale marketable securities, Fair Market Value	1,049,558	934,207
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	144,867	185,304
U.S. Government Agency Securities [Member]
Available-for-sale marketable securities, Cost	239,366	341,349
Available-for-sale Securities, Unrealized Gain	764	334
Available-for-sale marketable securities, Unrealized (Loss)	(28)	(173)
Available-for-sale marketable securities, Fair Market Value	240,102	341,510
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	30,074	97,542
Money Market Funds [Member]
Available-for-sale marketable securities, Cost	288,944	238,607
Available-for-sale marketable securities, Fair Market Value	288,944	238,607
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses
Commercial Paper [Member]
Available-for-sale marketable securities, Cost	235,556	103,472
Available-for-sale Securities, Unrealized Gain	17	1
Available-for-sale marketable securities, Unrealized (Loss)	(33)	(25)
Available-for-sale marketable securities, Fair Market Value	235,540	103,448
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	48,880	33,210
U.S. Treasury Securities [Member]
Available-for-sale marketable securities, Cost	137,934	138,354
Available-for-sale Securities, Unrealized Gain	533	360
Available-for-sale marketable securities, Unrealized (Loss)	(12)	(7)
Available-for-sale marketable securities, Fair Market Value	138,455	138,707
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	28,665	10,030
Corporate Debt Securities [Member]
Available-for-sale marketable securities, Cost	128,664	92,464
Available-for-sale Securities, Unrealized Gain	497	170
Available-for-sale marketable securities, Unrealized (Loss)	(77)	(56)
Available-for-sale marketable securities, Fair Market Value	129,084	92,578
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	37,248	43,434
Certificates Of Deposit And Time Deposits [Member]
Available-for-sale marketable securities, Cost	8,365	11,068
Available-for-sale Securities, Unrealized Gain	16	8
Available-for-sale marketable securities, Fair Market Value	8,381	11,076
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses
Equity And Debt Mutual Funds [Member]
Available-for-sale marketable securities, Cost	7,518	7,056
Available-for-sale Securities, Unrealized Gain	1,236	1,378
Available-for-sale marketable securities, Unrealized (Loss)		(431)
Available-for-sale marketable securities, Fair Market Value	8,754	8,003
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses		1,088
Non-U.S. Government Securities [Member]
Available-for-sale marketable securities, Cost	298	261
Available-for-sale Securities, Unrealized Gain		17
Available-for-sale marketable securities, Fair Market Value	298	278
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses

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.

+ References+ Details

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.

+ References+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References+ Details