Condensed Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Condensed Consolidated Statements Of Income [Abstract]
Net revenue	$ 380,399	$ 357,662
Cost of sales	143,086	129,680
Gross profit	237,313	227,982
Operating expenses:
Selling, general and administrative	110,520	101,323
Research and development	30,024	27,363
Amortization of acquired intangible assets	2,094	2,412
Total operating expenses	142,638	131,098
Income from operations	94,675	96,884
Other income, net:
Interest income, net	5,584	6,414
Other, net	1,671	(1,228)
Total other income, net	7,255	5,186
Income before income taxes	101,930	102,070
Income taxes	18,670	21,140
Net income	$ 83,260	$ 80,930
Basic earnings per share	$ 0.59	$ 0.57
Diluted earnings per share (note 2)	$ 0.58	$ 0.56
Dividend declared per share	$ 0.28	$ 0.25
Basic shares outstanding	140,127	142,005
Diluted shares outstanding	142,683	145,456