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Balance Sheet Components - Property, Plant and Equipment (Details) - USD ($)
$ in Millions
Jul. 31, 2021
May 01, 2021
Property Plant And Equipment [Line Items]    
Total property, plant and equipment, gross $ 538.2 $ 525.0
Less: accumulated depreciation (323.6) (321.0)
Property, plant and equipment, net 214.6 204.0
Land    
Property Plant And Equipment [Line Items]    
Total property, plant and equipment, gross 3.3 3.3
Buildings and Building Improvements    
Property Plant And Equipment [Line Items]    
Total property, plant and equipment, gross 89.0 88.9
Machinery and Equipment    
Property Plant And Equipment [Line Items]    
Total property, plant and equipment, gross 420.3 408.0
Construction In Progress    
Property Plant And Equipment [Line Items]    
Total property, plant and equipment, gross $ 25.6 $ 24.8