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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2021
Aug. 01, 2020
Jul. 31, 2021
Aug. 01, 2020
Feb. 03, 2018
Income Tax Disclosure [Abstract]          
Effective income tax rate 24.30% 28.50% 24.50% 28.80%  
U.S. federal corporate tax rate     21.00%   35.00%
Reasonably possible amount of reduction in unrecognized tax benefit over the next twelve months $ 0.6   $ 0.6