Stock-Based Compensation - 2012 Equity Replacement Plan - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended				6 Months Ended	12 Months Ended	6 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Aug. 02, 2014	Aug. 03, 2013	Aug. 03, 2013 2012 Equity Replacement Plan [Member]	Feb. 02, 2013 2012 Equity Replacement Plan [Member]	Aug. 02, 2014 2012 Equity Replacement Plan [Member] Scenario, Forecast [Member]	Feb. 02, 2013 Restricted Stock [Member] 2012 Equity Replacement Plan [Member]	Aug. 03, 2013 Performance-based Awards [Member] 2012 Equity Replacement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares received						1,331,548		1,331,548
Common stock, price per share								$ 31.00
Consecutive trading days								10 days
Common stock, value								$ 46.50
Restricted shares vested, issued						1,191,091
Remaining unvested shares					140,457
Non-cash compensation charge									$ 3,400,000
Stock-based compensation expense	$ 4,500,000	$ 60,700,000	$ 6,750,000	$ 64,282,000			$ 0