Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended
	Apr. 30, 2011	May 01, 2010
Consolidated Statements of Operations [Abstract]
Net sales	$ 1,113,849	$ 1,047,531
Cost of goods sold, including occupancy and distribution costs	783,406	745,311
GROSS PROFIT	330,443	302,220
Selling, general and administrative expenses	263,735	253,149
Pre-opening expenses	2,266	2,079
INCOME FROM OPERATIONS	64,442	46,992
Interest expense	3,484	3,508
Other income	(1,108)	(688)
INCOME BEFORE INCOME TAXES	62,066	44,172
Provision for income taxes	24,568	17,963
NET INCOME	$ 37,498	$ 26,209
EARNINGS PER COMMON SHARE:
Basic	$ 0.31	$ 0.23
Diluted	$ 0.30	$ 0.22
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic	119,361	115,155
Diluted	125,367	120,387