Stock-Based Compensation - Compensation by Function (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 11.0	$ 11.7	$ 33.4	$ 33.3
Cost of revenues
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	1.2	1.2	3.6	3.2
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	2.2	2.0	6.7	5.7
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 7.6	$ 8.5	$ 23.1	$ 24.4