Quarterly report pursuant to Section 13 or 15(d)

Summary of significant accounting policies - Leases (Details)

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Summary of significant accounting policies - Leases (Details) - USD ($)
$ in Thousands
Feb. 03, 2019
Aug. 03, 2019
Feb. 02, 2019
Aug. 04, 2018
Property, Plant and Equipment [Line Items]        
Election of transition package of three practical expedients true      
Operating lease liability   $ 1,892,004    
Assets        
Receivables, net   107,263 $ 136,168 $ 103,666
Prepaid expenses and other current assets   131,171 138,116 103,618
Property and equipment, net   1,219,948 1,226,029 1,212,978
Operating lease assets   1,499,556    
Liabilities and stockholders' equity        
Accrued liabilities   224,202 220,666 202,999
Current operating lease liabilities   208,261    
Deferred rent     434,980 422,455
Non-current operating lease liabilities   1,683,743    
Retained earnings   $ 1,078,678 $ 1,105,863 $ 1,115,751
ASU 2016-02, Leases (Topic 842)        
Assets        
Receivables, net $ 118,700      
Prepaid expenses and other current assets 112,856      
Property and equipment, net 1,209,046      
Operating lease assets 1,460,866      
Liabilities and stockholders' equity        
Accrued liabilities 219,206      
Current operating lease liabilities 210,721      
Non-current operating lease liabilities 1,629,249      
Retained earnings 1,103,488      
ASU 2016-02, Leases (Topic 842) | Effect of Adopting ASC 842        
Property, Plant and Equipment [Line Items]        
Operating lease liability 1,839,970      
Assets        
Receivables, net (17,468)      
Prepaid expenses and other current assets (25,260)      
Property and equipment, net (16,983)      
Operating lease assets 1,460,866      
Liabilities and stockholders' equity        
Accrued liabilities (1,460)      
Current operating lease liabilities 210,721      
Deferred rent (434,980)      
Non-current operating lease liabilities 1,629,249      
Retained earnings (2,375)      
ASU 2016-02, Leases (Topic 842) | Adjustment        
Liabilities and stockholders' equity        
Retained earnings $ 2,375