Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Numerator for basic net income per share:
Net income	$ 166,229	$ 114,385
Denominator for basic net income per share:
Weighted average common shares outstanding	242,519	242,883
Basic net income per share	$ 0.69	$ 0.47
Numerator for diluted net income per share:
Net income	$ 166,229	$ 114,385
Denominator for diluted net income per share:
Weighted average common shares outstanding	242,519	242,883
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	3,058	4,219
Shares used in computing diluted net income per share	245,577	247,102
Diluted net income per share	$ 0.68	$ 0.46
Antidilutive Shares
Anti-dilutive shares excluded from net income per share calculation	68,296	68,352