Leases - Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2024	Dec. 29, 2023	Dec. 30, 2022
Leases [Abstract]
Finance lease cost, Amortization of lease assets	$ 1.7	$ 1.5	$ 1.4
Operating lease cost	68.6	72.1	66.3
Short-term lease cost	8.0	7.0	5.3
Variable lease cost	6.2	7.4	5.1
Total lease cost	84.5	88.0	78.1
Operating cash flows for operating leases	59.5	58.1	51.2
Financing cash flows for finance leases	1.4	1.3	1.3
Right-of-use assets obtained in exchange for new operating lease obligations	38.2	51.0	59.6
Right-of-use assets obtained in exchange for new finance lease obligations	$ 0.1	$ 0.2	$ 0.1