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Summary of Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Apr. 29, 2018
USD ($)
Feb. 03, 2019
USD ($)
Store
Jan. 28, 2018
USD ($)
Jan. 29, 2017
USD ($)
Jan. 29, 2016
USD ($)
Jan. 29, 2018
USD ($)
Summary Of Significant Accounting Policies [Line Items]            
Number of stores | Store   625        
Inventory obsolescence reserves   $ 13,580,000 $ 12,649,000      
Advertising expenses     390,115,000 $ 382,206,000 $ 347,474,000  
Asset impairment charges   13,200,000   1,765,000    
Goodwill   85,382,000 18,838,000      
Goodwill impairment     0 0 0  
Self-insurance reserves   $ 28,542,000 26,370,000      
Period of recognition for stored-value card   4 years        
Balance at beginning of year     $ 11,842,000 16,058,000 19,113,000  
Provision for sales returns       302,320,000 303,694,000  
Actual sales returns       306,536,000 306,749,000  
Balance at end of year       $ 11,842,000 $ 16,058,000  
Gift card and other deferred revenue   $ 298,435,000        
Other Current Liabilities [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Liability for Expected Sales Returns   26,276,000        
Other Current Assets [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Merchandise Inventory to be Returned   $ 10,030,000        
Accounting Standards Update 2016-02 [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Increase in total long-term assets and total liabilities $ 1,200,000,000          
increase in liabilities for lease obligations 1,400,000,000          
Deferred Rent Receivables Net 200,000,000          
Operating Lease Right Of Use Asset $ 1,200,000,000          
Retained Earnings | Adjustments for New Accounting Pronouncement            
Summary Of Significant Accounting Policies [Line Items]            
Cumulative effect of net pre-tax increase to retained earnings           $ 17,862,000