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STOCK-BASED COMPENSATION - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares	Jun. 30, 2017 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 4,400,000	$ 11,400,000	$ 6,200,000
Total pre-tax unrecognized compensation costs related to non-vested awards	$ 17,800,000
Total pre-tax unrecognized compensation costs related to non-vested awards expected to be recognized, years	2 years 1 month 6 days
Total fair value of options and Restricted Stock Units vested	$ 14,900,000	14,800,000	$ 13,900,000
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	$ 20.96	$ 14.63	$ 9.09
Common Stock, Capital Shares Reserved for Future Issuance | shares	7,102,656
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	$ 49.57	$ 34.67	$ 23.92
Restricted Stock Units Outstanding, Shares Granted | shares	217,960
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	65,160
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	152,800
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

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