Defined Benefit Plans - Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 30, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Accrued benefit liability	$ (47.3)	$ (79.9)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current benefit payment liability	(1.3)	(1.5)
Accrued benefit liability	(40.4)	(59.6)
Net amount recognized	(41.7)	(61.1)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current benefit payment liability	(1.1)	(1.2)
Accrued benefit liability	(6.9)	(7.8)
Net amount recognized	$ (8.0)	$ (9.0)