Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income	$ 167,101	$ 144,613	$ 115,380
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,177	16,790	17,311
Share-based compensation	16,501	12,448	12,365
Amortization of capitalized software	7,148	7,489	9,682
Provision for losses on accounts receivable	7,137	6,168	3,875
Other-than-temporary impairment losses on investments, net	4,000	4,293	4,783
Net loss on disposal of property, plant and equipment	642	726	946
Impairment of capitalized software costs	336	0	0
Loss on other investments	0	500	0
Benefit from deferred income taxes	(3,436)	(8,579)	(3,062)
Gain on sales of long-term investments	0	(76)	0
Changes in operating assets and liabilities (net of impact of acquisitions):
Increase in accounts receivable	(40,095)	(15,104)	(4,099)
(Increase) decrease in inventory	(1,751)	369	3,905
(Increase) decrease in prepaid expenses and other assets	(1,790)	1,488	(940)
Increase in accounts payable	2,507	5,506	5,218
Increase (decrease) in accrued expenses and other current liabilities	2,551	(2,230)	19,620
(Decrease) increase in income tax assets and liabilities	(1,755)	12,454	3,813
Increase in deferred revenue	4,676	12,729	13,072
Net cash flows provided by operating activities	179,949	199,584	201,869
Cash flows from investing activities:
Net cash paid for acquisitions, net of cash acquired	(258,940)	(18,586)	(30,684)
Purchases of short-term investments	(78,816)	(198,605)	(308,966)
Proceeds from sales and maturities of investments	178,474	269,274	284,677
Purchases of property, plant and equipment	(17,468)	(10,706)	(9,044)
Internally developed software costs	(7,197)	(5,580)	(2,443)
Other	67	(339)	120
Net cash flows provided by (used in) investing activities	(183,880)	35,458	(66,340)
Cash flows from financing activities:
Repurchases of common stock	(59,199)	(33,403)	(47,635)
Cash paid for acquisition of non-controlling interest	(4,212)	(1,041)	0
Proceeds from stock option exercises	14,933	28,106	23,310
Realized tax benefits from stock option exercises	4,717	7,697	3,543
Proceeds from line of credit	0	1,131	0
Principal payments on line of credit	0	(2,573)	0
Other	(123)	(590)	243
Net cash flows used in financing activities	(43,884)	(673)	(20,539)
Effect of exchange rate changes on cash and cash equivalents	(50,658)	49,685	(30,042)
Net increase (decrease) in cash and cash equivalents	(98,473)	284,054	84,948
Cash and cash equivalents at beginning of year	661,259	377,205	292,257
Cash and cash equivalents at end of year	562,786	661,259	377,205
Cash paid during the fiscal year for:
Interest	290	250	111
Income taxes	$ 61,612	$ 46,349	$ 44,318