CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenue	$ 1,721.7	$ 1,347.1	$ 1,123.2
Operating costs and expenses
Operating costs (excluding depreciation and amortization and including stock-based compensation—Note 12)	578.7	413.5	344.2
Selling, general and administrative expenses (including stock-based compensation—Note 12)	386.4	358.4	384.7
Depreciation and amortization	516.3	406.2	338.2
Total operating costs and expenses	1,481.4	1,178.1	1,067.1
Operating income	240.3	169.0	56.1
Other expenses
Interest expense	(220.1)	(214.0)	(203.5)
Loss on extinguishment of debt	(33.8)	(94.3)	(1.9)
Foreign currency (loss)/gain on intercompany loans	(53.8)	(24.4)	4.7
Other (expense)/income, net	(0.3)	(0.4)	0.3
Total other expenses, net	(308.0)	(333.1)	(200.4)
Loss from operations before income taxes	(67.7)	(164.1)	(144.3)
Provision/(benefit) for income taxes	8.5	(8.8)	37.3
Loss from continuing operations	(76.2)	(155.3)	(181.6)
Earnings from discontinued operations, net of income taxes			2.3
Net loss	$ (76.2)	$ (155.3)	$ (179.3)
Weighted-average shares used to compute net loss per share:
Basic and diluted	243.3	235.4	223.0
Loss from continuing operations per share:
Basic and diluted	$ (0.31)	$ (0.66)	$ (0.81)
Earnings from discontinued operations per share:
Basic and diluted			0.01
Net loss per share:
Basic and Diluted	$ (0.31)	$ (0.66)	$ (0.80)