SEGMENT REPORTING (Reconciliation from Segment Adjusted EBITDA to Net Loss from Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
SEGMENT REPORTING
Total Segment Adjusted EBITDA	$ 329.9	$ 263.4	$ 646.5	$ 524.0
Interest expense	(73.1)	(53.7)	(146.7)	(107.0)
Depreciation and amortization expense	(195.9)	(131.4)	(380.0)	(269.9)
Transaction costs	(5.9)	(6.2)	(14.2)	(9.2)
Stock-based compensation	(23.5)	(34.5)	(51.3)	(66.5)
Loss on extinguishment of debt			(4.9)
Foreign currency gain/(loss) on intercompany loans	3.1	(17.4)	13.9	(28.6)
Non-cash loss on investments	(0.2)	(0.2)	(0.3)	(0.5)
Income from operations before income taxes	$ 34.4	$ 20.0	$ 63.0	$ 42.3