Stock-Based Compensation (Total Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 25, 2016	Dec. 27, 2015	Dec. 25, 2016	Dec. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 12,206	$ 14,390	$ 26,856	$ 29,462
Cost of revenue, net [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	2,564	2,714	5,343	5,335
Research and development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	1,907	2,428	4,513	5,192
Selling, general and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	6,184	7,140	13,819	14,988
Wolfspeed business [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 1,551	$ 2,108	$ 3,181	$ 3,947