Retirement Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Dec. 25, 2022
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.0	$ 0.0	$ 0.0
Interest cost	1.5	1.6	1.1
Expected return on assets	0.0	0.0	0.0
Amortization of actuarial (gain) loss	0.1	0.0	0.8
Curtailment/Settlement (gain) loss	0.0	0.0	0.0
Net periodic benefit cost	1.6	1.6	1.9
Postemployment Retirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	1.0	1.1	0.8
Amortization of service credit	(0.2)	(0.3)	(0.3)
Amortization of actuarial (gain) loss	(0.1)	(0.2)	0.1
Curtailment/Settlement (gain) loss	(0.2)	0.0	0.0
Net periodic benefit cost	$ 0.5	$ 0.6	$ 0.6