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Treasury Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jul. 27, 2020
Jun. 30, 2021
Jun. 30, 2020
Treasury Stock.      
Repurchase (in shares) 16,095,819 0  
Treasury stock cost per share (in dollars per share) $ 4.82 $ 0.0 $ 1.89
Treasury stock, value $ 77.6    
Treasury stock transaction (in shares)   0