Stockholders' Equity (Dividends) (Details) (USD $)	1 Months Ended													3 Months Ended																12 Months Ended
	Jan. 31, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2012	Jan. 31, 2012	Nov. 30, 2011	Aug. 31, 2011	May 31, 2011	Jan. 31, 2011	Nov. 30, 2010	Aug. 30, 2010	May 31, 2010	Feb. 02, 2010	Feb. 02, 2013		Oct. 27, 2012		Jul. 28, 2012		Apr. 28, 2012		Jan. 28, 2012		Oct. 29, 2011		Jul. 30, 2011		Apr. 30, 2011		Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Stockholders' Equity Note [Abstract]
Cash dividends declared per share (in dollars per share)	$ 0.17	$ 0.14	$ 0.14	$ 0.14	$ 0.14	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.31	[1],[2]	$ 0.14	[1]	$ 0.14	[1]	$ 0.00	[1]	$ 0.25	[3],[4]	$ 0.11	[3]	$ 0.11	[3]	$ 0.00	[3]	$ 0.59	$ 0.47	$ 0.35

[1] Includes $.14 per share dividend declared in November 2012 and $.17 per share dividend declared in January 2013.

[2] The quarter ended February 2, 2013 was a 14-week quarter; all other quarters preesnted were 13 weeks.

[3] All per share amounts have been adjusted for the two-for-one stock split effective December 15, 2011.

[4] Includes $.11 per share dividend declared in November 2011 and $.14 per share dividend declared in January 2012.