Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements Of Income [Abstract]
Net revenues	$ 1,368,515	$ 1,243,148	$ 1,092,357
Cost of sales	547,780	501,822	436,874
Gross profit	820,735	741,326	655,483
Operating expenses:
Selling, general and administrative	401,621	371,249	328,858
Research and development	109,733	92,007	75,202
Donations to research foundations	1,000	1,000	3,000
Amortization of acquired intangible assets	13,974	10,146	8,041
Total operating expenses	526,328	474,402	415,101
Income from operations	294,407	266,924	240,382
Other income:
Interest income	33,866	27,801	16,696
Interest expense	(4,786)	(1,758)	(2,667)
Other, net (note 12)	8,458	10,740	6,178
Total other income, net	37,538	36,783	20,207
Income before income taxes	331,945	303,707	260,589
Income taxes (note 13)	77,095	76,721	70,504
Net income	$ 254,850	$ 226,986	$ 190,085
Basic earnings per share	$ 1.75	$ 1.49	$ 1.26
Diluted earnings per share (note 2-j)	$ 1.71	$ 1.44	$ 1.23
Basic weighted average shares outstanding	145,901	152,471	150,908
Diluted weighted average shares outstanding	149,316	157,195	155,098