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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
May 02, 2017
Aug. 04, 2018
Jul. 29, 2017
Aug. 04, 2018
Jul. 29, 2017
Feb. 03, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Stock-based compensation expense   $ 6,100,000 $ 30,900,000 $ 14,092,000 $ 36,166,000  
Stock-based compensation cost capitalized       0 0  
Rollover units and profit interests [1]   2,424,000   2,424,000   $ 2,211,000
Selling, general and administrative expenses   186,225,000 193,690,000 $ 344,659,000 357,050,000  
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   100,000 100,000 $ 200,000 200,000  
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   900,000   $ 900,000   700,000
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          
Time Based Restricted [Member] | Chairman and Chief Executive Officer [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of share lapse per year 250,000          
Time Based Restricted [Member] | Chairman and Chief Executive Officer [Member] | Stock Options [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Option vesting period 4 years          
Performance Based Restricted [Member] | Chairman and Chief Executive Officer [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.    
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   $ 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 $ 0 0  
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Stock Options [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Outstanding shares   8,031,998   8,031,998    
Options outstanding, weighted-average exercise price per share   $ 52.63   $ 52.63    
Numbers of options vested       6,125,419    
Vested weighted-average exercise price per share       $ 52.03    
Aggregate intrinsic value of options outstanding   $ 660,200,000   $ 660,200,000    
Aggregate intrinsic value of options vested or expected to vest   605,600,000   605,600,000    
Aggregate intrinsic value of options exercisable   506,600,000   $ 506,600,000    
Weighted-average remaining contractual life of options exercisable       5 years 7 months 13 days    
Unrecognized compensation expense related to unvested options   $ 25,600,000   $ 25,600,000    
Unrecognized compensation expense with weighted-average period       2 years 10 months 24 days    
2012 Stock Incentive Plan and 2012 Stock Option Plan [Member] | Restricted Stock And Restricted Stock Unit [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Unrecognized compensation expense with weighted-average period       2 years 6 months 25 days    
Outstanding shares   594,408   594,408    
Restricted stock awards outstanding with weighted-average grant date fair value per share   $ 52.74   $ 52.74    
Vested restricted stock unit   132,660   163,275    
Vested weighted-average grant date fair value   $ 58.73   $ 57.54    
Vested weighted-average vest date fair value   $ 58.73   $ 57.54    
Unrecognized compensation expense related to unvested options   $ 16,400,000   $ 16,400,000    
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   $ 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 13—Stock-Based Compensation.