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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Jan. 28, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]      
Stock-based compensation expense $ 5,289,000 $ 3,998,000  
Stock-based compensation cost capitalized 0 0  
Rollover units and profit interests [1] 1,891,000   $ 1,784,000
Selling, general and administrative expenses $ 163,360,000 $ 138,950,000  
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    
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 400,000   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    
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 8,221,249    
Options outstanding, weighted-average exercise price per share $ 49.09    
Numbers of options vested 5,372,458    
Vested weighted-average exercise price per share $ 50.93    
Aggregate intrinsic value of options outstanding $ 48,500,000    
Aggregate intrinsic value of options vested or expected to vest 38,000,000    
Aggregate intrinsic value of options exercisable $ 13,700,000    
Weighted-average remaining contractual life of options exercisable 6 years 3 months 22 days    
Unrecognized compensation expense related to unvested options $ 28,400,000    
Unrecognized compensation expense with weighted-average period 3 years 7 months 28 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 3 years 5 months 27 days    
Outstanding shares 1,029,740    
Restricted stock awards outstanding with weighted-average grant date fair value per share $ 53.38    
Vested restricted stock unit 13,719    
Vested weighted-average exercise price per share $ 68.32    
Unrecognized compensation expense related to unvested options $ 24,300,000    
[1] Represents rollover units and profit interests associated with the acquisition of Waterworks. Refer to Note 15—Stock-Based Compensation.