Description of Business and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Jul. 27, 2019	Jul. 28, 2018	Apr. 28, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 26.1
Operating Lease, Liability	$ 26.8
Fiscal period duration	91 days	91 days
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