Condensed Consolidated Statements Of Shareholders' Equity (USD $) In Thousands	Common Stock [Member]	Capital In Excess Of Par [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Non-Controlling Interest [Member]	Total
Balance, value at Jun. 30, 2011	$ 2,020	$ 132,529	$ 833,839	$ 48,323	$ 6,540	$ 1,023,251
Balance, shares at Jun. 30, 2011	80,805
Net income			118,764		258	119,022
Foreign currency translation adjustments, net of tax of $0				(40,367)	(452)	(40,819)
Change in unrealized losses on long-term investments, net of taxes (tax benefits)				(504)		(504)
Acquisition of non-controlling interest		(1,797)			(2,632)	(4,429)
Share-based compensation		12,549				12,549
Stock issued upon exercise of options, value	16	12,080				12,096
Stock issued upon exercise of options, shares	666
Repurchases of stock, value	(29)	(53,623)				(53,652)
Repurchases of stock, shares	(1,178)
Income tax benefit from options exercised		5,096				5,096
Balance, value at Mar. 31, 2012	2,007	106,834	952,603	7,452	3,714	1,072,610
Balance, shares at Mar. 31, 2012	80,293
Balance, value at Jun. 30, 2012	2,008	107,662	1,000,822	(17,847)	3,486	1,096,131
Balance, shares at Jun. 30, 2012	80,309					80,309
Net income			129,414		287	129,701
Foreign currency translation adjustments, net of tax of $0				(4,126)	16	(4,110)
Change in unrealized losses on long-term investments, net of taxes (tax benefits)				2,683		2,683
Acquisition of non-controlling interest		(197)			(649)	(846)
Share-based compensation		16,266				16,266
Stock issued upon exercise of options, value	9	7,317				7,326
Stock issued upon exercise of options, shares	407
Repurchases of stock, value	(51)	(90,836)				(90,887)
Repurchases of stock, shares	(2,057)
Income tax benefit from options exercised		3,124				3,124
Balance, value at Mar. 31, 2013	$ 1,966	$ 43,336	$ 1,130,236	$ (19,290)	$ 3,140	$ 1,159,388
Balance, shares at Mar. 31, 2013	78,659					78,659