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Shareholders' Equity - Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 12 Months Ended
Jul. 31, 2021
May 01, 2021
Apr. 30, 2022
May 01, 2021
May 02, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Cash dividends     $ (20.4) $ (17.4) $ (16.3)
Description of changes in dividends rate     increased its quarterly dividend from $0.11 per share to $0.14 per share    
Increased quarterly dividend per share $ 0.14 $ 0.11      
RSAs          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Cash dividends       $ (0.9)