SEGMENT REPORTING (Reconciliation from Total Segment Adjusted EBITDA to Income from Operations Before Income Taxes) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
SEGMENT REPORTING
Total Segment Adjusted EBITDA									$ 1,283.1	$ 1,288.3	$ 1,118.2
Interest expense	$ (86.1)	$ (86.4)	$ (84.0)	$ (82.2)	$ (77.8)	$ (75.3)	$ (73.1)	$ (73.6)	(338.7)	(299.8)	(241.5)
Depreciation and amortization	(157.5)	(161.2)	(146.9)	(167.8)	(176.1)	(190.9)	(195.7)	(183.8)	(633.4)	(746.5)	(606.2)
Transaction costs									(17.0)	(18.6)	(20.5)
Stock-based compensation									(109.3)	(96.7)	(114.1)
Loss on extinguishment of debt								(4.9)		(4.9)	(18.2)
Gain on business disposition									5.5
Foreign currency (loss)/gain on intercompany loans	(8.3)	7.1	(8.3)	(4.6)	(22.4)	13.9	3.1	10.8	(14.1)	5.4	(10.3)
Non-cash loss on investments									(0.8)	(0.9)	(1.1)
Income from operations before income taxes	$ 27.3	$ 52.7	$ 52.7	$ 42.6	$ 19.5	$ 44.5	$ 33.6	$ 28.7	$ 175.3	$ 126.3	$ 106.3

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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