Stock-Based Compensation - Compensation by Function (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 03, 2020	Sep. 28, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 12.5	$ 10.3
Cost of revenues
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	1.2	1.0
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	2.2	1.7
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 9.1	$ 7.6