Net Income Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Apr. 28, 2013	Apr. 29, 2012
Numerator:
Net income	$ 77,891	$ 60,437
Denominator:
Denominator for basic net income per share, weighted average shares (in shares)	616,872	615,780
Effect of dilutive securities:
Equity awards outstanding (in shares)	2,430	8,006
Denominator for diluted net income per share, weighted average shares (in shares)	619,302	623,786
Net income per share:
Basic net income per share	$ 0.13	$ 0.10
Diluted net income per share	$ 0.13	$ 0.10
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	26,112	23,430

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