Leases - Lease Maturity (Details) - USD ($) $ in Millions	Sep. 25, 2021	Sep. 26, 2020
Operating Leases
2022	$ 44.7
2023	34.7
2024	28.0
2025	22.8
2026	13.9
Thereafter	45.4
Total future undiscounted lease payments	189.5
Less imputed interest	(18.7)
Total reported lease liability	170.8	$ 120.0
Finance Leases
2022	0.1
2023	0.0
2024	0.0
2025	0.0
2026	0.0
Thereafter	0.0
Total future undiscounted lease payments	0.1
Less imputed interest	0.0
Total reported lease liability	$ 0.1	$ 0.2