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Stock-Based Compensation - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 05, 2018
May 02, 2017
Jan. 30, 2017
May 27, 2016
Nov. 01, 2012
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           $ 50,709,000 $ 29,214,000 $ 24,223,000
Stock-based compensation cost capitalized           0 0 0
Rollover units and profit interests [1]           2,211,000 1,784,000  
Selling, general and administrative expenses           $ 717,766,000 626,751,000 567,131,000
Design Investors WW Acquisition Company, LLC [Member] | Profit Interests [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Profit interest expected life           5 years    
Selling, general and administrative expenses           $ 400,000 300,000  
Design Investors WW Acquisition Company, LLC [Member] | Profit Interests [Member] | Other Non-Current Obligations [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Liability associated with the profit interests           700,000 300,000  
Appreciation Rights [Member] | Design Investors WW Acquisition Company, LLC [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Rollover units and profit interests           1,500,000 1,500,000  
Appreciation Rights [Member] | Design Investors WW Acquisition Company, LLC [Member] | Rollover Units [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           0 0  
Chairman and Chief Executive Officer [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           $ 37,500,000    
Chairman and Chief Executive Officer [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   1,000,000            
Exercise price of option granted   $ 50            
Chairman and Chief Executive Officer [Member] | Time Based Restricted [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Number of share lapse per year   250,000            
Chairman and Chief Executive Officer [Member] | Time Based Restricted [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option vesting period   4 years            
Chairman and Chief Executive Officer [Member] | Performance Based Restricted [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Expected vested exercise price description           performance-based restrictions linked to achieving the Company’s common stock price objectives of $100, $125 and $150 per share.    
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           $ 37,500,000 $ 16,300,000 10,400,000
Option to purchase of common stock           1,242,400    
Aggregate intrinsic value of options outstanding           $ 360,100,000    
Aggregate intrinsic value of options vested or expected to vest           320,700,000    
Aggregate intrinsic value of options exercisable           $ 245,800,000    
Weighted-average remaining contractual life of options exercisable           6 years 1 month 6 days    
Unrecognized compensation expense related to unvested options           $ 24,600,000    
Unrecognized compensation expense with weighted-average period           3 years 25 days    
Exercise price of option granted           $ 50.21    
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Employees and Advisors [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock         6,829,041      
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Chairman and Chief Executive Officer [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   1,000,000            
Exercise price of option granted   $ 50            
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Chairman and Chief Executive Officer [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           $ 23,900    
2012 Stock Incentive Plan [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Total number of shares issuable     1,232,103       415,530  
Number of additional shares issuable     816,573     495,653    
2012 Stock Incentive Plan [Member] | Waterworks Associates [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense             $ 3,700,000  
Exercise price of option granted       $ 33.54        
Common stock, lapse description           options are fully vested as of the date of grant but any shares issued upon exercise of such options will be subject to selling restrictions which are scheduled to lapse in five equal installments on the first, second, third, fourth and fifth anniversaries of the grant date.    
Stock option granted       322,784        
2012 Stock Incentive Plan [Member] | Restricted Stock Awards [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           $ 12,800,000 $ 12,600,000 $ 13,800,000
Unrecognized compensation expense with weighted-average period           3 years 18 days    
Unrecognized compensation expense related to unvested options           $ 20,900,000    
2012 Stock Incentive Plan [Member] | Subsequent Event [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Number of additional shares issuable 430,347              
Time-Based Restrictions and Performance-Based Restrictions [Member] | Chairman and Chief Executive Officer [Member] | Stock Options [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Stock-based compensation expense           $ 23,900,000    
Performance-Based Restrictions [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Common stock, lapse description           The stock price objectives are measured each year and are set at prices for the Company’s common stock of $100, $125 and $150 per share. If all three stock price objectives are met in the first performance year, restrictions will lapse as to 250,000 shares in aggregate at the end of such year, with 83,333 shares tied to a $100 price per share, 83,333 shares tied to a $125 price per share and 83,334 shares tied to a $150 price per share. The same price performance tests are applied in the second year of performance such that restrictions will lapse for an additional 250,000 shares at the end of the second year and then again as to an additional 250,000 shares at the end of each of the third and fourth years so long as Mr. Friedman remains employed at the end of each year.    
Performance-Based Restrictions [Member] | Common Stock Achieving Price per Share of $100 [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   83,333            
Exercise price of option granted   $ 100            
Performance-Based Restrictions [Member] | Common Stock Achieving Price per Share of $125 [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   83,333            
Exercise price of option granted   $ 125            
Performance-Based Restrictions [Member] | Common Stock Achieving Price per Share of $150 [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   83,334            
Exercise price of option granted   $ 150            
Performance-Based Restrictions [Member] | First Performance Year [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   250,000            
Performance-Based Restrictions [Member] | Second Performance Year [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   250,000            
Performance-Based Restrictions [Member] | Third Performance Year [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   250,000            
Performance-Based Restrictions [Member] | Fourth Performance Year [Member]                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Option to purchase of common stock   250,000            
[1] Represents rollover units and profit interests associated with the acquisition of Waterworks. Refer to Note 16—Stock-Based Compensation.