Leases (Tables)  | 
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Feb. 01, 2020  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of weighted-average remaining lease term and discount rate for operating leases | 
 The following table presents supplemental balance sheet information, the weighted-average remaining lease term, and discount rate for operating leases as of February 1, 2020: 
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| Summary of information related to lease costs for operating leases | 
 The following table presents the components of lease cost for operating leases: 
 
 
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| Schedule of cash flow information and non-cash activity related to operating leases | 
 The following table presents supplemental disclosures of cash flow information related to operating leases: 
 
 
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| Schedule of maturities of non-cancellable operating lease liabilities | 
 The following table presents maturities of operating lease liabilities as of February 1, 2020: 
 
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