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INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
Income Tax Disclosure [Abstract] |  |  |
Effective tax rate, increase (decrease) | (1.30%) |  |
Effective tax rate | 9.70% | 11.00% | 11.00%
Valuation allowance, deferred tax asset, increase (decrease) | $ 0.3 |  |
Undistributed earnings of foreign subsidiaries that the Company intends to reinvest indefinitely | 811.5 |  |
Amount of unrecognized tax benefits that would affect the effective tax rate if recognized | 27.4 |  |
Interest accrued related to uncertain tax matters | $ 2.4 |  |
Settlement with taxing authority of statute lapses |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |  |
Decrease in unrecognized tax benefits is reasonably possible |  |  | $ 3.4

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