Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	May 02, 2020	May 04, 2019
Valuation Allowance [Line Items]
Increase in valuation allowance for deferred tax assets	$ 2.2
Effective tax rate	73.10%	28.20%
Income tax benefit related to the carry back of fiscal 2019 federal net operating losses to prior periods pursuant to the CARES Act	$ 12.3
The additional income tax benefit due to the carry back of the project fiscal 2020 loss to years with a 35% statutory tax rate	$ 3.8