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Stock-Based Compensation - 2012 Stock Option Plan and 2012 Stock Incentive Plan - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Feb. 01, 2016
Feb. 02, 2015
Jul. 02, 2013
Nov. 01, 2012
Jan. 30, 2016
Feb. 01, 2014
Feb. 02, 2013
Jan. 31, 2015
2012 Stock Option Plan and 2012 Stock Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock shares issued       1,264,036        
Resale restrictions period       20 years        
Common stock, value, minimum       $ 50.75        
Common stock, value, maximum       111.25        
Exercise price of stock option granted       $ 26.50        
Unrecognized compensation expense             $ 52.0  
Total number of shares issuable   14,240,370           13,442,519
2012 Stock Option Plan and 2012 Stock Incentive Plan [Member] | Stock Options [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock shares issued         687,600      
Exercise price per share         $ 42.09      
Exercise price of stock option granted         $ 89.75      
2012 Stock Option Plan and 2012 Stock Incentive Plan [Member] | Stock Options [Member] | Resale Restrictions [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Lapse of shares       875,389        
Exercise price per share       $ 29.00        
2012 Stock Option Plan and 2012 Stock Incentive Plan [Member] | Stock Options [Member] | Resale Restriction after Offer Date [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Lapse of shares       5,953,652        
Exercise price per share       $ 46.50        
2012 Stock Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Exercise price of stock option granted     $ 75.43          
Stock option granted     1,000,000          
Stock-based compensation expense           $ 33.7    
Stock option, lapse description         option was fully vested as of the date of grant but any shares issued upon exercise of the option will be subject to selling restrictions which are scheduled to lapse in three equal installments on the third, fourth and fifth anniversaries of the grant date.      
Number of additional shares issuable   797,851     2,151,580      
2012 Stock Incentive Plan [Member] | Subsequent Event [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of additional shares issuable 811,666              
Employees and Advisors [Member] | 2012 Stock Option Plan and 2012 Stock Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock shares issued       6,829,041        
Directors [Member] | 2012 Stock Option Plan and 2012 Stock Incentive Plan [Member] | Restricted Stock Awards [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock shares issued       40,623