Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jan. 01, 2017	Jan. 03, 2016	Jan. 01, 2017	Jan. 03, 2016
Consolidated Statements Of Income [Abstract]
Revenues		$ 375,817	$ 347,128	$ 749,712	$ 689,045
Cost of sales	[1],[2]	90,990	84,384	182,816	169,589
Gross profit		284,827	262,744	566,896	519,456
Operating expenses
Research and development	[1],[2]	77,030	69,884	153,389	136,486
Selling, general and administrative	[1],[2]	47,552	43,403	103,961	83,596
Total operating expenses		124,582	113,287	257,350	220,082
Operating income		160,245	149,457	309,546	299,374
Interest income and other income		2,361	1,521	4,534	2,508
Income before income taxes		162,606	150,978	314,080	301,882
Provision for income taxes		38,620	29,446	74,972	68,303
Net income		$ 123,986	$ 121,532	$ 239,108	$ 233,579
Basic earnings per share		$ 0.50	$ 0.50	$ 0.97	$ 0.95
Shares used in the calculation of basic earnings per share		245,804	244,591	245,561	244,831
Diluted earnings per share		$ 0.50	$ 0.50	$ 0.97	$ 0.95
Shares used in the calculation of diluted earnings per share		246,280	244,880	246,026	245,178
Cash dividends per share		$ 0.32	$ 0.30	$ 0.64	$ 0.60

[1] Cost of sales

[2] Cost of sales