INCOME TAXES - Components of Provision (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Current:
Federal	$ 0.8	$ 0.2	$ 0.4
State and local	11.1	9.8	1.1
Foreign	155.3	67.0	129.0
Total	167.2	77.0	130.5
Deferred:
Federal	(116.6)	25.2	(256.9)
State and local	(49.9)	(0.7)	(24.2)
Foreign	(9.2)	(126.2)	(108.9)
Total	(175.7)	(101.7)	(390.0)
Benefit for income taxes	$ (8.5)	$ (24.7)	$ (259.5)