Leases - Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2025	Dec. 27, 2024	Dec. 29, 2023
Leases [Abstract]
Finance lease cost, Amortization of lease assets	$ 1.5	$ 1.7	$ 1.5
Operating lease cost	48.9	68.6	72.1
Short-term lease cost	13.7	8.0	7.0
Variable lease cost	4.7	6.2	7.4
Total lease cost	68.8	84.5	88.0
Operating cash flows for operating leases	53.0	59.5	58.1
Financing cash flows for finance leases	1.5	1.4	1.3
Right-of-use assets obtained in exchange for new operating lease obligations	56.4	38.2	51.0
Right-of-use assets obtained in exchange for new finance lease obligations	$ 0.0	$ 0.1	$ 0.2