LEASE AND OTHER COMMITMENTS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Leases [Abstract]
Rent expense	$ 197.7	$ 208.2	$ 166.1
Payments collected from sub-lessors	$ 9.4	$ 6.2	$ 6.0