Balance Sheet Components - Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jul. 30, 2022	Apr. 30, 2022
Property Plant And Equipment [Line Items]
Total property, plant and equipment, gross	$ 522.2	$ 521.5
Less: accumulated depreciation	(327.6)	(324.5)
Property, plant and equipment, net	194.6	197.0
Land
Property Plant And Equipment [Line Items]
Total property, plant and equipment, gross	3.1	3.3
Buildings and Building Improvements
Property Plant And Equipment [Line Items]
Total property, plant and equipment, gross	89.5	89.2
Machinery and Equipment
Property Plant And Equipment [Line Items]
Total property, plant and equipment, gross	402.5	407.5
Construction In Progress
Property Plant And Equipment [Line Items]
Total property, plant and equipment, gross	$ 27.1	$ 21.5