Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 80.2	$ 176.2	$ 147.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25.0	13.8	8.9
Loss on disposition of assets	0.5	0.9
Share-based compensation expense	45.7	27.1	26.6
Bad debt expense	31.5	39.2	33.3
Impairment of intangible assets			1.5
Deferred income taxes	(0.4)	8.1	7.4
Unrecognized tax benefits	2.1	(0.7)	0.7
Accreted interest on note receivable		(3.3)	(2.7)
Excess tax benefit from share-based compensation	(3.4)	(11.1)	(7.9)
Gain on sale of marketable investment securities			(0.2)
Changes in assets and liabilities:
Prepaid expenses	(5.5)	(5.5)	0.8
Trade accounts receivable	(34.4)	(24.4)	(67.2)
Other receivables	2.5	(1.9)	(0.7)
Inventory	(0.8)	(15.8)	6.6
Prepaid taxes	13.6	(12.9)
Accounts payable	(3.1)	(1.5)	8.0
Accrued liabilities	(13.4)	3.1	11.6
Deferred revenue	0.4	(1.1)
Net cash provided by operating activities	140.5	190.2	173.9
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(23.9)	(14.3)	(11.4)
Acquisitions, net of cash acquired	(20.1)	(223.5)
Equity investment			(5.0)
Purchases of marketable investment securities	(80.7)	(161.8)	(443.8)
Proceeds from maturities and sales of marketable investment securities	165.6	382.5	385.3
Net cash provided by (used) in investing activities	40.9	(17.1)	(74.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from common stock issued under share-based compensation plans	30.0	64.8	57.8
Excess tax benefit from share-based compensation	3.4	11.1	7.9
Repurchase and retirement of common stock	(210.7)	(287.7)	(146.3)
Net cash used in financing activities	(177.3)	(211.8)	(80.6)
Effect of foreign exchange rates on cash and cash equivalents	(4.8)	(0.6)	(0.7)
Net (decrease) increase in cash and cash equivalents	(0.7)	(39.3)	17.7
Cash and cash equivalents at beginning of year	64.8	104.1	86.4
Cash and cash equivalents at end of year	$ 64.1	$ 64.8	$ 104.1