BUSINESS DESCRIPTION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Property and Equipment:
Depreciation expense	$ 38.1	$ 42.7	$ 44.4
Buildings | Minimum
Property and Equipment:
Estimated useful asset lives	30 years
Buildings | Maximum
Property and Equipment:
Estimated useful asset lives	39 years
Improvements
Property and Equipment:
Estimated useful asset lives	10 years
Equipment | Minimum
Property and Equipment:
Estimated useful asset lives	3 years
Equipment | Maximum
Property and Equipment:
Estimated useful asset lives	10 years
Furniture | Minimum
Property and Equipment:
Estimated useful asset lives	3 years
Furniture | Maximum
Property and Equipment:
Estimated useful asset lives	10 years
Software | Minimum
Property and Equipment:
Estimated useful asset lives	3 years
Software | Maximum
Property and Equipment:
Estimated useful asset lives	10 years
Capitalized software | Minimum
Property and Equipment:
Estimated useful asset lives	5 years
Capitalized software | Maximum
Property and Equipment:
Estimated useful asset lives	7 years