BUSINESS DESCRIPTION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Property and Equipment:
Depreciation expense	$ 31.8	$ 31.9	$ 38.1
Buildings | Minimum
Property and Equipment:
Estimated useful asset lives	30 years
Buildings | Maximum
Property and Equipment:
Estimated useful asset lives	39 years
Improvements | Maximum
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
Computer Software | Minimum
Property and Equipment:
Estimated useful asset lives	3 years
Computer Software | Maximum
Property and Equipment:
Estimated useful asset lives	10 years
Software Development | Minimum
Property and Equipment:
Estimated useful asset lives	3 years
Software Development | Maximum
Property and Equipment:
Estimated useful asset lives	7 years