Investments and Fair Value Measurements (Details 1) (USD $) In Thousands	Oct. 02, 2011	Jan. 02, 2011
Financial assets measured at fair value on a recurring basis
Marketable Securities, Current	$ 1,478,702	$ 2,018,565
Marketable Securities, Noncurrent	2,714,663	2,494,972
Other current assets and other non-current assets	33,212	23,841
Total assets	4,882,414	5,151,076
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities fair value disclosure	72,682	33,606
Non-current liabilities	6,424	43,156
Total financial liabilities	79,106	76,762
Cash Equivalents [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	655,837	613,698
Cash Equivalents [Member] \| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	498,121	587,973
Cash Equivalents [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	157,716	25,725
Cash Equivalents [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Cash equivalents	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets measured at fair value on a recurring basis
Marketable Securities, Current	95,245	112,906
Marketable Securities, Noncurrent	62,685	8,322
Other current assets and other non-current assets	0	0
Total assets	656,051	709,201
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities fair value disclosure	0	0
Non-current liabilities	0	0
Total financial liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Financial assets measured at fair value on a recurring basis
Marketable Securities, Current	1,383,457	1,905,659
Marketable Securities, Noncurrent	2,651,978	2,486,650
Other current assets and other non-current assets	33,212	23,841
Total assets	4,226,363	4,441,875
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities fair value disclosure	72,682	33,606
Non-current liabilities	6,424	43,156
Total financial liabilities	79,106	76,762
Significant Unobservable Inputs (Level 3) [Member]
Financial assets measured at fair value on a recurring basis
Marketable Securities, Current	0	0
Marketable Securities, Noncurrent	0	0
Other current assets and other non-current assets	0	0
Total assets	0	0
Financial Liabilities measured at fair value on a recurring basis
Other current accrued liabilities fair value disclosure	0	0
Non-current liabilities	0	0
Total financial liabilities	$ 0	$ 0

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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 includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale which are intended to be held for less than one year or the normal operating cycle, whichever is longer.

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