Related Party Transactions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Related Party Transactions [Abstract]
Purchase from related party vendor	$ 7.0	$ 5.6	$ 13.4	$ 11.4
Purchase from related party vendor as percentage of total merchandise purchases	14.00%	11.00%	14.00%	12.00%
Cost of sale related to vendor	6.0	5.8	12.2	11.6
Payable amounts outstanding to vendor	$ 2.4	$ 1.7	$ 2.4	$ 1.7