Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Non-cancelable operating lease terms for certain office equipment	3 years
Non-cancelable operating lease terms for store leases	5 years
Common area maintenance (CAM) charges and real estate taxes	$ 84.4	$ 78.8	$ 70.4
Minimum
Number of lease term extensions allowed	1
Maximum
Number of lease term extensions allowed	2