Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	Sep. 26, 2021	Jun. 27, 2021
Operating Leases
June 26, 2022 (remainder of fiscal 2022)	$ 5.7
June 26, 2022	3.6
June 25, 2023	2.2
June 30, 2024	1.2
June 29, 2025	0.7
Thereafter	0.1
Total lease payments	13.5
Imputed lease interest	(0.5)
Total lease liabilities	13.0	$ 12.0
Finance Leases
June 26, 2022 (remainder of fiscal 2022)	8.8
June 26, 2022	0.7
June 25, 2023	0.7
June 30, 2024	0.7
June 29, 2025	0.7
Thereafter	14.5
Total lease payments	26.1
Imputed lease interest	(7.5)
Total lease liabilities	18.6	$ 15.2
Total
June 26, 2022 (remainder of fiscal 2022)	14.5
June 26, 2022	4.3
June 25, 2023	2.9
June 30, 2024	1.9
June 29, 2025	1.4
Thereafter	14.6
Total lease payments	39.6
Imputed lease interest	(8.0)
Total lease liabilities	$ 31.6