Balance Sheet and Other Details - Accounts Receivable Reserves and Allowances (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018
Allowance for Doubtful Accounts Receivable
Balance at Beginning of Period	$ 2.0	$ 2.4	$ 1.6
Acquisitions	0.0	0.0	0.7
Charged to Costs and Expenses	2.0	1.4	(0.4)
Deduction	(1.0)	(1.8)	0.5
Balance at End of Period	$ 3.0	$ 2.0	$ 2.4