Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 01, 2012	Jul. 03, 2011	Jul. 01, 2012	Jul. 03, 2011
Numerator for basic net income per share:
Net income	$ 12,969	$ 248,390	$ 127,354	$ 472,514
Denominator for basic net income per share:
Weighted average common shares outstanding	242,276	238,851	242,579	238,162
Basic net income per share	$ 0.05	$ 1.04	$ 0.53	$ 1.98
Numerator for diluted net income per share:
Net income	$ 12,969	$ 248,390	$ 127,354	$ 472,514
Denominator for diluted net income per share:
Weighted average common shares outstanding	242,276	238,851	242,579	238,162
Incremental common shares attributable to exercise of outstanding employee stock options and SARs (assuming proceeds would be used to purchase common stock), RSUs and ESPP	2,294	5,011	3,447	5,556
Shares used in computing diluted net income per share	244,570	243,862	246,026	243,718
Diluted net income per share	$ 0.05	$ 1.02	$ 0.52	$ 1.94
Antidilutive Shares
Anti-dilutive shares excluded from net income per share calculation	74,276	73,623	71,043	72,898