SEGMENT REPORTING (Reconciliation from Segment Adjusted EBITDA to Net Loss from Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
SEGMENT REPORTING
Total Segment Adjusted EBITDA	$ 319.6	$ 282.0	$ 966.1	$ 806.0
Interest expense	(75.3)	(63.0)	(222.0)	(170.0)
Depreciation and amortization expense	(191.2)	(155.7)	(571.2)	(425.6)
Transaction costs	(3.3)	(8.4)	(17.5)	(17.6)
Stock-based compensation	(19.2)	(26.5)	(70.5)	(93.0)
Loss on extinguishment of debt		(4.5)	(4.9)	(4.5)
Foreign currency gain/(loss) on intercompany loans	13.9	3.9	27.8	(24.7)
Non-cash loss on investments	(0.2)	(0.2)	(0.5)	(0.7)
Income from operations before income taxes	$ 44.3	$ 27.6	$ 107.3	$ 69.9