Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements Of Cash Flows [Abstract]
Net cash flows provided by operating activities	$ 131,622	$ 153,230
Cash flows from investing activities:
Proceeds from sales and maturities of investments	108,372	210,362
Purchases of investments	(78,671)	(167,211)
Purchases of property, plant and equipment	(13,418)	(7,893)
Internally developed software costs	(5,870)	(4,167)
Net cash paid for acquisitions	(593)	(12,669)
Other	(51)	89
Net cash flows provided by investing activities	9,769	18,511
Cash flows from financing activities:
Repurchases of common stock	(53,652)	(11,871)
Proceeds from stock option exercises	12,096	23,780
Cash paid for an acquisition of noncontrolling interest	(4,212)
Realized tax benefits from stock option exercises	4,884	6,454
Proceeds from line of credit		1,131
Principal payments on line of credit		(2,655)
Exercise of noncontrolling put option		(1,041)
Other	(93)	(572)
Net cash flows (used in) provided by financing activities	(40,977)	15,226
Effect of exchange rate changes on cash and cash equivalents	(27,025)	42,323
Net increase in cash and cash equivalents	73,389	229,290
Cash and cash equivalents at beginning of year	661,259	377,205
Cash and cash equivalents at end of period	$ 734,648	$ 606,495