Basis of Presentation and Summary of Significant Accounting Policies (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2021 USD ($) store	Aug. 01, 2020 USD ($)	Jul. 31, 2021 USD ($) store	Aug. 01, 2020 USD ($)	Jan. 29, 2022	Jan. 30, 2021
Components of Operating Cost and Expense [Abstract]
Number of Stores | store	1,418		1,418
Number of States in which Entity Operates	47		47
Fiscal Period Duration	91 days	91 days	182 days	182 days	364 days	364 days
Distribution and Outbound Transportation Costs	$ 71.9	$ 59.7	$ 138.1	$ 112.0
Advertising Expense	$ 21.9	$ 21.9	$ 43.8	$ 44.8