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Income Taxes - Schedule of Income before Income Taxes, Income Tax Expense and Effective Income Tax Rate (Details) - USD ($)
$ in Millions
3 Months Ended
Jul. 31, 2021
Aug. 01, 2020
Aug. 01, 2020
Income Tax Disclosure [Abstract]      
Income before income taxes $ 34.8 $ 15.6  
Income tax expense (benefit) $ 5.7 $ (5.1) $ (5.1)
Effective tax rate 16.40% (32.70%)