Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidated Statements Of Income [Abstract]
Net revenue	$ 523,659	$ 465,450
Cost of sales (excluding amortization of acquired intangible assets)	218,054	196,266
Gross profit	305,605	269,184
Operating expenses:
Selling, general and administrative	143,849	128,851
Research and development	37,415	34,446
Amortization of acquired intangible assets	11,783	11,741
Total operating expenses	193,047	175,038
Income from operations	112,558	94,146
Other income (loss), net:
Interest income	4,870	3,908
Interest expense	(7,785)	(6,401)
Other, net	(1,158)	1,272
Total other income (loss), net	(4,073)	(1,221)
Income before income taxes	108,485	92,925
Income taxes	22,360	16,818
Net income	$ 86,125	$ 76,107
Basic earnings per share (note 11)	$ 0.61	$ 0.54
Diluted earnings per share (note 11)	0.60	0.54
Dividend declared per share	$ 0.35	$ 0.33
Basic shares outstanding (000's)	142,247	140,785
Diluted shares outstanding (000's)	143,480	142,090