Financial Instruments (Details) (USD $) In Thousands	Oct. 01, 2011	Jan. 01, 2011
Assets
Cash equivalents - Money market funds	$ 564,917	$ 463,681
Available-for-sale securities	2,946	12,702
Trading securities held in Non-Qualified Deferred Compensation Plan (NQDC)	27,572	28,738
2015 Notes Hedges	179,658	130,211
Foreign currency exchange contracts		1,559
Time Deposits	13	13
Total Assets	775,106	636,904
Liabilities
Acquisition-related contingent consideration	3,745	966
Foreign currency exchange contracts	1,111
2015 Notes Embedded Conversion Derivative	179,658	130,211
Total Liabilities	184,514	131,177
Fair Value Measurements, Level 1 [Member]
Assets
Cash equivalents - Money market funds	564,917	463,681
Available-for-sale securities	2,946	12,702
Trading securities held in Non-Qualified Deferred Compensation Plan (NQDC)	27,572	28,738
2015 Notes Hedges	0	0
Foreign currency exchange contracts		0
Time Deposits	13	13
Total Assets	595,448	505,134
Liabilities
Acquisition-related contingent consideration	0	0
Foreign currency exchange contracts	0
2015 Notes Embedded Conversion Derivative	0	0
Total Liabilities	0	0
Fair Value Measurements, Level 2 [Member]
Assets
Cash equivalents - Money market funds	0	0
Available-for-sale securities	0	0
Trading securities held in Non-Qualified Deferred Compensation Plan (NQDC)	0	0
2015 Notes Hedges	179,658	130,211
Foreign currency exchange contracts		1,559
Time Deposits	0	0
Total Assets	179,658	131,770
Liabilities
Acquisition-related contingent consideration	0	0
Foreign currency exchange contracts	1,111
2015 Notes Embedded Conversion Derivative	179,658	130,211
Total Liabilities	180,769	130,211
Fair Value Measurements, Level 3 [Member]
Assets
Cash equivalents - Money market funds	0	0
Available-for-sale securities	0	0
Trading securities held in Non-Qualified Deferred Compensation Plan (NQDC)	0	0
2015 Notes Hedges	0	0
Foreign currency exchange contracts		0
Time Deposits	0	0
Total Assets	0	0
Liabilities
Acquisition-related contingent consideration	3,745	966
Foreign currency exchange contracts	0
2015 Notes Embedded Conversion Derivative	0	0
Total Liabilities	$ 3,745	$ 966

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