Defined Benefit Plans - Reconciliation of Level Three Measurements (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	$ 482.5
Ending balance	468.0	$ 482.5
Group annuity/insurance contracts (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	26.0	25.5
Actual return on assets related to assets still held	0.8	0.5
Ending balance	$ 26.8	$ 26.0