Income Taxes - Schedule of Income before Income Taxes, Income Tax Expense and Effective Income Tax Rate (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 01, 2020	Jan. 26, 2019	Feb. 01, 2020	Jan. 26, 2019
Income Tax Disclosure [Abstract]
Income before Income Taxes	$ 44.0	$ 27.7	$ 108.6	$ 73.5
Income Tax Expense (Benefit)	$ 2.8	$ (3.0)	$ 15.3	$ 4.5
Effective Tax Rate (as a percent)	6.40%	(10.40%)	14.10%	6.10%