Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 29, 2011	Jan. 29, 2011
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.0006	$ 0.0006
Common stock, shares authorized	2,100,000,000	2,100,000,000
Common stock, shares issued	918,764,252	908,449,980
Treasury stock, shares	218,550,765	187,536,869