Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value of financial and nonfinancial obligations.

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Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Short-term investments:
Available-for-sale securities	$ 90,445us-gaap_AvailableForSaleSecurities	$ 96,788us-gaap_AvailableForSaleSecurities
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC	27,034us-gaap_DeferredCompensationPlanAssets	23,960us-gaap_DeferredCompensationPlanAssets
2015 Notes Hedges	523,930	306,817
Foreign currency exchange contracts		262
Total Assets	1,369,905us-gaap_AssetsFairValueDisclosure	775,999us-gaap_AssetsFairValueDisclosure
Liabilities
Acquisition-related contingent consideration		4,091
2015 Notes Embedded Conversion Derivative	523,930	306,817
Foreign currency exchange contracts	3,163
Total Liabilities	527,093us-gaap_LiabilitiesFairValueDisclosure	310,908us-gaap_LiabilitiesFairValueDisclosure
Money market funds [Member]
Assets
Cash equivalents	728,496	345,872
Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	34,894	37,441
Bank certificates of deposit [Member]
Assets
Cash equivalents		2,300
Short-term investments:
Available-for-sale securities	21,910	20,308
United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	19,374	24,246
United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	9,208	10,223
Commercial paper [Member]
Short-term investments:
Available-for-sale securities	3,186	2,493
Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	1,873	2,077
Fair Value Measurements, Level 1 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC	27,034	23,960
2015 Notes Hedges	0	0
Foreign currency exchange contracts		0
Total Assets	785,985	406,378
Liabilities
Acquisition-related contingent consideration		0
2015 Notes Embedded Conversion Derivative	0	0
Foreign currency exchange contracts	0
Total Liabilities	0	0
Fair Value Measurements, Level 1 [Member] \| Money market funds [Member]
Assets
Cash equivalents	728,496	345,872
Fair Value Measurements, Level 1 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 1 [Member] \| Bank certificates of deposit [Member]
Assets
Cash equivalents		0
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 1 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	19,374	24,246
Fair Value Measurements, Level 1 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	9,208	10,223
Fair Value Measurements, Level 1 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 1 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	1,873	2,077
Fair Value Measurements, Level 2 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC	0	0
2015 Notes Hedges	523,930	306,817
Foreign currency exchange contracts		262
Total Assets	583,920	369,621
Liabilities
Acquisition-related contingent consideration		0
2015 Notes Embedded Conversion Derivative	523,930	306,817
Foreign currency exchange contracts	3,163
Total Liabilities	527,093	306,817
Fair Value Measurements, Level 2 [Member] \| Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 2 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	34,894	37,441
Fair Value Measurements, Level 2 [Member] \| Bank certificates of deposit [Member]
Assets
Cash equivalents		2,300
Short-term investments:
Available-for-sale securities	21,910	20,308
Fair Value Measurements, Level 2 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 2 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 2 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	3,186	2,493
Fair Value Measurements, Level 2 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC	0	0
2015 Notes Hedges	0	0
Foreign currency exchange contracts		0
Total Assets	0	0
Liabilities
Acquisition-related contingent consideration	0	4,091	4,218
2015 Notes Embedded Conversion Derivative	0	0
Foreign currency exchange contracts	0
Total Liabilities	0	4,091
Fair Value Measurements, Level 3 [Member] \| Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 3 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| Bank certificates of deposit [Member]
Assets
Cash equivalents		0
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	0	0
Fair Value Measurements, Level 3 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	$ 0	$ 0