Description of Business and Summary of Significant Accounting Policies - Recently Adopted Accounting Pronouncements Costs (Details) - USD ($) $ in Millions	May 02, 2020	Apr. 28, 2019	Apr. 27, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Right-of-use assets	$ 23.5		$ 0.0
Operating Lease, Liability	$ 25.9
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