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Retirement Plans (Summary of Net Pension and Supplemental Executive Retirement Plan Expense Recognized) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 01, 2022
Oct. 02, 2021
Retirement Benefits [Abstract]        
Service cost pertaining to benefits earned during the period $ 1.3 $ 1.7 $ 4.0 $ 5.2
Interest cost on projected benefit obligations 3.3 3.2 9.9 9.6
Expected return on pension assets (5.1) (4.8) (15.4) (14.6)
Net amortization loss 2.9 3.4 8.5 10.3
Net pension expense $ 2.4 $ 3.5 $ 7.0 $ 10.5