Retirement Benefits - Schedule of Additional Information for Pension Plans With Accumulated Benefit Obligations and Projected benefit Obligations in Excess of Plan Assets (Details) - Pension Benefits - USD ($) $ in Millions	Dec. 28, 2025	Dec. 29, 2024
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 39.0	$ 42.4
Accumulated benefit obligation	39.0	42.4
Fair value of plan assets	$ 0.0	$ 0.0