Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements Of Income [Abstract]
Net revenues	$ 339,731	$ 314,774
Cost of sales	131,083	129,720
Gross profit	208,648	185,054
Operating expenses:
Selling, general and administrative	98,303	94,203
Research and development	27,220	26,206
Amortization of acquired intangible assets	2,636	3,771
Total operating expenses	128,159	124,180
Income from operations	80,489	60,874
Other income, net:
Interest income, net	8,471	6,924
Other, net	1,941	(1,301)
Total other income, net	10,412	5,623
Income before income taxes	90,901	66,497
Income taxes	19,636	15,979
Net income	$ 71,265	$ 50,518
Basic earnings per share	$ 0.50	$ 0.34
Diluted earnings per share (note 2j)	$ 0.49	$ 0.33
Dividend declared per share (note 6)	$ 0.17
Basic shares outstanding	142,651	150,366
Diluted shares outstanding	146,055	154,051