Stock-Based Compensation - Total Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 29, 2019	Sep. 23, 2018
Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 16.9	$ 10.0
Cost of revenue, net
Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	2.2	1.6
Research and development
Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	2.4	1.5
Sales, general and administrative
Employee Service share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 12.3	$ 6.9