Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements Of Cash Flows
Net cash flows provided by operating activities	$ 139,895	$ 131,622
Cash flows from investing activities:
Proceeds from maturities of investments	24,685	108,372
Proceeds from sales of auction rate securities	42,119
Purchases of investments	(108,423)	(78,671)
Purchases of property, plant and equipment	(15,692)	(13,418)
Internally developed software costs	(3,398)	(5,870)
Net cash paid for acquisitions	(367)	(593)
Other	68	(51)
Net cash flows (used in) provided by investing activities	(61,008)	9,769
Cash flows from financing activities:
Repurchases of common stock	(90,887)	(53,652)
Proceeds from stock option exercises	7,326	12,096
Proceed from advance on line of credit	4,014
Realized tax benefits from stock option exercises	3,069	4,884
Cash paid for acquisition of noncontrolling interest	(846)	(4,212)
Other	(70)	(93)
Net cash flows used in financing activities	(77,394)	(40,977)
Effect of exchange rate changes on cash and cash equivalents	1,419	(27,025)
Net increase in cash and cash equivalents	2,912	73,389
Cash and cash equivalents at beginning of period	562,786	661,259
Cash and cash equivalents at end of period	$ 565,698	$ 734,648