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Share-Based Compensation (Weighted Average Assumptions for Options Granted) (Details) - $ / shares
12 Months Ended
Jun. 30, 2021
Jun. 30, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]    
Expected term (years) 5 years 4 years
Expected volatility 42.78% 32.93%
Risk-free interest rate 0.36% 2.84%
Dividend yield 0.00% 0.00%
Weighted-average fair value per option (in dollars per share) $ 9.01 $ 11.86