Description of Business and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	9 Months Ended
	Feb. 01, 2020	Jan. 26, 2019	Apr. 28, 2019	Apr. 27, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fiscal period duration	280 days	273 days
Right-of-use assets	$ 27.3			$ 0.0
Operating Lease, Liability	$ 27.9
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets			$ 27.6
Operating Lease, Liability			$ 28.1