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Income taxes (Tables)
3 Months Ended
May 01, 2021
Income Tax Disclosure [Abstract]  
Reconciliation Of Effective Tax Rate
13 weeks ended
May 1, 2021May 2, 2020
Estimated annual effective tax rate before discrete items18.6 %24.5 %
Discrete items recognized
(2.5)%11.2 %
Effective tax rate recognized in statement of operations
16.1 %35.7 %