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Stock-Based Compensation (Additional Information) (Detail)
12 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
$ / shares
Jun. 30, 2018
USD ($)
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total intrinsic value of options exercised $ 1,200,000 $ 4,400,000 $ 11,400,000
Total pre-tax unrecognized compensation costs related to non-vested awards $ 17,900,000    
Total pre-tax unrecognized compensation costs related to non-vested awards expected to be recognized, years 2 years 2 months 12 days    
Total fair value of options and Restricted Stock Units vested $ 14,500,000 14,900,000 $ 14,800,000
Share-based Payment Arrangement, Amount Capitalized $ 0 $ 0  
Stock Incentive Plans      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation arrangements plans 2    
Weighted average estimated grant date fair values, for options granted at market price, per share | $ / shares $ 16.98 $ 20.96 $ 14.63
Common Stock, Capital Shares Reserved for Future Issuance | shares 4,374,281    
Stock Incentive Plans | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options (in years) 10 years    
Vesting Period (in years) 5 years    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares $ 42.22 $ 49.57 $ 34.67
Restricted Stock Units Outstanding, Shares Granted | shares 414,810    
Performance Based Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options (in years) 3 years    
Restricted Stock Units Outstanding, Shares Granted | shares 135,660    
Non-Performance Based Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options (in years) 3 years    
Restricted Stock Units Outstanding, Shares Granted | shares 279,150    
Non-Performance Based Shares | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options (in years) 1 year    
Non-Performance Based Shares | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options (in years) 4 years