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INCOME TAXES (Schedule of Unrecognized Tax Benefits) (Details)
$ in Millions
12 Months Ended
Jun. 30, 2018
USD ($)
INCOME TAXES  
Balance, beginning of year $ 0.2
Additions for current year tax positions 1.2
Additions for prior year tax positions 1.7
Reductions as a result of settlement with tax authority (0.1)
Balance, end of year $ 3.0