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Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Short-term investments:
Available-for-sale securities	$ 100,704	$ 3,037
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC	24,329	24,058
2015 Notes Hedges	303,154	215,113
Foreign currency exchange contracts	1,737	200
Total Assets	996,258	726,510
Liabilities
Acquisition-related contingent consideration	4,218	3,911
2015 Notes Embedded Conversion Derivative	303,154	215,113
Total Liabilities	307,372	219,024
Money market funds [Member]
Assets
Cash equivalents	566,334	484,102
United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	23,239
Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	31,359
United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	10,258
Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	27,826
Commercial paper [Member]
Short-term investments:
Available-for-sale securities	5,783
Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	2,239	3,037
Fair Value Measurements, Level 1 [Member]
Short-term investments:
Trading securities held in Non-Qualified Deferred Compensation Plan, or NQDC	24,329	24,058
2015 Notes Hedges	0	0
Foreign currency exchange contracts	0	0
Total Assets	626,399	511,197
Liabilities
Acquisition-related contingent consideration	0	0
2015 Notes Embedded Conversion Derivative	0	0
Total Liabilities	0	0
Fair Value Measurements, Level 1 [Member] \| Money market funds [Member]
Assets
Cash equivalents	566,334	484,102
Fair Value Measurements, Level 1 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	23,239
Fair Value Measurements, Level 1 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 1 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	10,258
Fair Value Measurements, Level 1 [Member] \| Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 1 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 1 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	2,239	3,037
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	303,154	215,113
Foreign currency exchange contracts	1,737	200
Total Assets	369,859	215,313
Liabilities
Acquisition-related contingent consideration	0	0
2015 Notes Embedded Conversion Derivative	303,154	215,113
Total Liabilities	303,154	215,113
Fair Value Measurements, Level 2 [Member] \| Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 2 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 2 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	31,359
Fair Value Measurements, Level 2 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 2 [Member] \| Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	27,826
Fair Value Measurements, Level 2 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	5,783
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	0
Total Assets	0	0
Liabilities
Acquisition-related contingent consideration	4,218	3,911	966
2015 Notes Embedded Conversion Derivative	0	0
Total Liabilities	4,218	3,911
Fair Value Measurements, Level 3 [Member] \| Money market funds [Member]
Assets
Cash equivalents	0	0
Fair Value Measurements, Level 3 [Member] \| United States Treasury securities [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 3 [Member] \| Corporate debt securities [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 3 [Member] \| United States government agency securities [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 3 [Member] \| Bank certificates of deposit [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 3 [Member] \| Commercial paper [Member]
Short-term investments:
Available-for-sale securities	0
Fair Value Measurements, Level 3 [Member] \| Marketable equity securities [Member]
Short-term investments:
Available-for-sale securities	$ 0	$ 0