Related Party Transactions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 01, 2014	Nov. 02, 2013	Nov. 01, 2014	Nov. 02, 2013
Related Party Transactions [Abstract]
Purchase from related party vendor	$ 9.4	$ 9.7	$ 21.4	$ 23.1
Purchase from related party vendor as percentage of total merchandise purchases	13.00%	15.30%	12.30%	14.40%
Cost of sale related to vendor	5.8	6.4	17.4	18.5
Payable amounts outstanding to vendor	$ 3.8	$ 2.2	$ 3.8	$ 2.2