Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012
Numerator for basic net income per share:
Net income	$ 261,789	$ 12,969	$ 428,018	$ 127,354
Denominator for basic net income per share:
Weighted average common shares outstanding	241,519	242,276	242,019	242,579
Basic net income per share	$ 1.08	$ 0.05	$ 1.77	$ 0.53
Numerator for diluted net income per share:
Net income	$ 261,789	$ 12,969	$ 428,018	$ 127,354
Denominator for diluted net income per share:
Weighted average common shares outstanding	241,519	242,276	242,019	242,579
Incremental common shares attributable to exercise of outstanding employee stock options, SARs and ESPP (assuming proceeds would be used to purchase common stock), and RSUs	2,733	2,294	3,083	3,447
Effect of dilutive 1% Sr. Convertible Notes due 2013	1,563	0	467	0
Shares used in computing diluted net income per share	245,815	244,570	245,569	246,026
Diluted net income per share	$ 1.06	$ 0.05	$ 1.74	$ 0.52
Antidilutive Shares
Anti-dilutive shares excluded from net income per share calculation	32,515	74,276	34,670	71,043