Quarterly Result (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended																12 Months Ended
		Jan. 30, 2016		Oct. 31, 2015		Aug. 01, 2015		May. 02, 2015		Jan. 31, 2015		Nov. 01, 2014		Aug. 02, 2014		May. 03, 2014		Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Quarterly Financial Information Disclosure [Abstract]
Net sales		$ 1,540,769		$ 1,230,886		$ 1,144,218		$ 1,183,059		$ 1,485,362		$ 1,157,292		$ 1,043,581		$ 1,128,269		$ 5,098,932	$ 4,814,504	$ 4,427,503
Gross margin	[1],[2]	631,557		489,302		448,303		470,129		626,621		458,702		398,554		429,808
Net income (loss)		$ 98,771	[3]	$ 15,116	[3]	$ 10,900	[3]	$ 25,695	[3]	$ 94,865	[3],[4]	$ (34,214)	[3],[4]	$ (6,470)	[3],[4]	$ 11,774	[3],[4]	$ 150,482	$ 65,955	$ 16,150
Net income (loss) per share—basic:
Common stockholders		$ 1.37	[5]	$ 0.20	[5]	$ 0.14	[5]	$ 0.34	[5]	$ 1.27	[5]	$ (0.46)	[5]	$ (0.09)	[5]	$ 0.16	[5]	$ 2.03	$ 0.89	$ (0.26)
Net income (loss) per share—diluted:
Common stockholders		$ 1.35	[5]	$ 0.20	[5]	$ 0.14	[5]	$ 0.34	[5]	$ 1.24	[5]	$ (0.46)	[5]	$ (0.09)	[5]	$ 0.16	[5]	$ 1.99	$ 0.87	$ (0.39)

[1] Gross margin for the quarterly period ended January 30, 2016 is inclusive of a loss related to inventory shrinkage adjustments of $3.5 million as a result of actual shrink being more than what the Company had estimated. Gross margin for the quarterly period ended January 31, 2015 is inclusive of gains related to inventory shrinkage adjustments of $10.0 million as a result of actual shrink being less than what the Company had estimated.

[2] Gross margin is equal to net sales less cost of sales.

[3] Net income for the quarters ended January 30, 2016 and January 31, 2015 includes $5.6 million and $9.3 million, respectively, of charges related to certain ongoing litigation matters. Refer to Note 17, “Commitments and Contingencies,” for discussion on the Company’s legal matters.

[4] Net income (loss) for the quarter ended November 1, 2014 includes a loss of $70.3 million from the extinguishment of debt. Refer to Note 7, “Long Term Debt,” for additional details.

[5] Quarterly income (loss) per share results may not equal full year amounts due to rounding.