Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Condensed Consolidated Statements Of Income [Abstract]
Net revenue	$ 591,634	$ 514,204	$ 1,716,566	$ 1,510,051
Cost of sales (excluding amortization of acquired intangible assets)	247,339	214,490	716,874	632,082
Gross profit	344,295	299,714	999,692	877,969
Operating expenses:
Selling, general and administrative	147,893	137,864	443,559	406,028
Research and development	37,434	35,130	115,492	107,761
Amortization of acquired intangible assets	11,673	11,378	34,772	34,809
Restructuring expenses (note 15)	10,922	7,945	10,922	12,358
Litigation settlement expenses				8,500
Acquisition related expenses				10,076
Total operating expenses	207,922	192,317	604,745	579,532
Income from operations	136,373	107,397	394,947	298,437
Other income (loss), net:
Interest income	4,228	4,425	13,677	14,490
Interest expense	(7,719)	(7,336)	(22,873)	(22,331)
Other, net	(2,739)	3,504	(5,357)	6,525
Total other income (loss), net	(6,230)	593	(14,553)	(1,316)
Income before income taxes	130,143	107,990	380,394	297,121
Income taxes	20,018	20,167	174,617	56,449
Net income	$ 110,125	$ 87,823	$ 205,777	$ 240,672
Basic earnings per share (note 11)	$ 0.77	$ 0.62	$ 1.44	$ 1.70
Diluted earnings per share (note 11)	0.76	0.62	1.43	1.69
Dividend declared per share	$ 0.35	$ 0.33	$ 1.05	$ 0.99
Basic shares outstanding (000's)	142,898	141,714	142,688	141,266
Diluted shares outstanding (000's)	143,985	142,724	143,895	142,363