CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income/(loss)	$ 101.9	$ 85.7	$ (76.2)
Adjustments to reconcile net income/(loss) to net cash provided by operating activities
Depreciation and amortization	747.4	606.9	516.3
Loss on extinguishment of debt	4.9	18.2	33.8
Non-cash interest expense	9.8	9.6	11.9
Stock-based compensation	96.7	114.1	155.9
Amortization of deferred revenue	(137.8)	(117.6)	(111.5)
Foreign currency (gain)/loss on intercompany loans	(5.4)	10.3	53.8
Excess tax benefit from stock-based compensation		(15.6)	(7.9)
Deferred income taxes	25.0	12.6	(2.8)
Provision for bad debts	5.1	3.7	3.9
Non-cash loss on investments	1.0	1.2	1.2
Changes in operating assets and liabilities, net of acquisitions
Trade receivables	(48.1)	(7.2)	1.9
Accounts payable and accrued liabilities	7.3	5.2	(36.0)
Additions to deferred revenue	212.8	200.5	184.0
Other assets and liabilities	(49.5)	(33.4)	(14.3)
Net cash provided by operating activities	971.1	909.8	714.0
Cash flows from investing activities
Purchases of property and equipment	(789.9)	(835.5)	(704.1)
Cash paid for acquisitions, net of cash acquired	(176.9)	(1,434.8)	(437.5)
Net cash used in investing activities	(966.8)	(2,270.3)	(1,141.6)
Cash flows from financing activities
Proceeds from debt	462.8	3,865.8	929.3
Principal payments on long-term debt	(315.7)	(2,408.8)	(535.0)
Payment of early redemption fees on debt extinguished			(20.3)
Principal payments on capital lease obligations	(8.4)	(6.6)	(4.9)
Payment of debt issuance costs	(4.3)	(35.4)	(4.2)
Common stock repurchases	(93.5)		(81.1)
Excess tax benefit from stock-based compensation			7.9
Cash paid for Santa Clara acquisition financing arrangement and other	(5.3)	(3.7)
Net cash provided by financing activities	35.6	1,411.3	291.7
Net cash flows	39.9	50.8	(135.9)
Effect of changes in foreign exchange rates on cash	(3.9)	(0.8)	(2.0)
Net increase/(decrease) in cash and cash equivalents	36.0	50.0	(137.9)
Cash and cash equivalents, beginning of year	220.7	170.7	308.6
Cash and cash equivalents, end of period	256.7	220.7	170.7
Supplemental disclosure of non-cash investing and financing activities:
Cash paid for interest, net of capitalized interest	280.2	195.6	228.5
Cash paid for income taxes	20.3	13.1	14.0
Non-cash purchases of equipment through capital leasing	22.1	12.0	7.6
Non-cash purchases of equipment through nonmonetary exchange	17.1	12.8	50.6
(Decrease)/increase in accounts payable and accrued expenses for purchases of property and equipment	$ (32.2)	$ 16.9	$ 25.7