CREDIT FACILITY (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended		12 Months Ended							6 Months Ended					1 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jan. 28, 2012	Jul. 28, 2012 Merchandise Letters of Credit	Jan. 28, 2012 Merchandise Letters of Credit	Jul. 30, 2011 Merchandise Letters of Credit	Jul. 28, 2012 Standby Letters of Credit	Jan. 28, 2012 Standby Letters of Credit	Jul. 30, 2011 Standby Letters of Credit	Jul. 28, 2012 Credit Agreement	Jul. 28, 2012 Credit Agreement Prime rate	Jul. 28, 2012 Credit Agreement LIBOR	Jul. 28, 2012 Credit Agreement Merchandise Letters of Credit	Jul. 28, 2012 Credit Agreement Standby Letters of Credit	Aug. 31, 2010 2011 Amendment
Credit facilities
Sublimit Availability	$ 88.1	$ 133.6	$ 90.7
Letters of Credit sublimit										125
Borrowing capacity, accordion feature										75
Committed Portion Of Accordian Feature										25
Basis spread on variable rate, low end of range (as a percent)											0.75%	1.75%
Basis spread on variable rate, high end of range (as a percent)											1.00%	2.00%
Debt Instrument, Description of Variable Rate Basis												one, two, three or six
Line of credit facility, unused line fee percentage (as a percent)										0.375%
Letters of credit facility fee, low end of range (as a percent)													0.875%	1.25%
Letters of credit facility fee, high end of range (as a percent)													1.00%	1.50%
Deferred financing costs paid															0.7
Deferred financing costs gross										3.3
Deferred financing costs, remaining unamortized balance										1.4
Letter of credit fees	0.1	0.2
Line of credit facility, maximum borrowing capacity	150.0	200.0	150.0							150.0
Line of credit facility, current borrowing capacity	150.0	168.9	150.0
Outstanding borrowings	0	0	0
Letters of credit outstanding				24.7	23.1	24.2	12.2	11.2	11.1
Utilization of credit facility at end of period	36.9	35.3	34.3
Availability	113.1	133.6	115.7
Interest rate at end of period (as a percent)	4.00%	3.30%	4.00%
Average loan balance during the period	0	0	0
Highest end of day loan balance during the period	$ 0	$ 0.2	$ 0.2
Average interest rate (as a percent)	4.00%	3.30%	3.60%