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Retirement Plans (Summary of Net Pension and Supplemental Executive Retirement Plan Expense Recognized) (Details) - USD ($)
$ in Millions
 3 Months Ended
Apr. 02, 2022
Apr. 03, 2021
Retirement Benefits [Abstract]    
Service cost pertaining to benefits earned during the period $ 1.3 $ 1.8
Interest cost on projected benefit obligations 3.3 3.2
Expected return on pension assets (5.1) (4.9)
Net amortization loss 2.8 3.4
Net pension expense $ 2.3 $ 3.5