Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021
Federal:
Current	$ 0.0	$ 0.0	$ 0.0
Deferred	0.0	0.0	0.0
Total federal income tax expense	0.0	0.0	0.0
State:
Current	2.6	(2.2)	20.1
Deferred	0.0	0.0	0.0
Total state income tax expense (benefit)	2.6	(2.2)	20.1
Foreign:
Current	27.6	63.2	44.8
Deferred	5.0	(11.4)	(1.6)
Total foreign income tax expense	32.6	51.8	43.2
Total income tax expense	$ 35.2	$ 49.6	$ 63.3