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Retirement Plans - Summary of Net Pension and SERP Expense Recognized (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Service cost pertaining to benefits earned during the year $ 2.8 $ 3.1 $ 5.3
Interest cost on projected benefit obligations 17.8 17.8 13.2
Expected return on pension assets (19.6) (18.5) (20.5)
Net amortization loss (gain) (1.7) (0.7) 11.3
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment 0.0 1.0 0.0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment (0.9) 0.0 0.0
Net pension expense 0.2 0.7 9.3
Pension [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net pension expense (3.9) (3.2) 5.5
SERP [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Net pension expense $ 4.1 $ 3.9 $ 3.8