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Retirement Plans (Summary of Net Pension and Supplemental Executive Retirement Plan Expense Recognized) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 30, 2024
Apr. 01, 2023
Retirement Benefits [Abstract]    
Service cost pertaining to benefits earned during the period $ 0.7 $ 0.8
Interest cost on projected benefit obligations 4.4 4.4
Expected return on pension assets (4.9) (4.6)
Net amortization loss (0.4) (0.2)
Net pension expense (income) $ (0.2) $ 0.4