Fair Value Measurements - Summary of Activity Recorded for Derivatives Using Level 3 Inputs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Aug. 02, 2014	May 03, 2014	Aug. 03, 2013	May 04, 2013	Aug. 02, 2014	Aug. 03, 2013
Derivative Liability [Roll Forward]
Beginning balance as of beginning of period	$ 29,495	$ 30,720	$ 29,372	$ 20,082	$ 30,720	$ 20,082
Loss (Gain) on change in fair value	(10,434)	(1,225)	21,154	9,290	(11,659)	30,444
Ending balance as of end of period	$ 19,061	$ 29,495	$ 50,526	$ 29,372	$ 19,061	$ 50,526