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Retirement Plans (Summary of Net Pension and Supplemental Executive Retirement Plan Expense Recognized) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 02, 2022
Jul. 03, 2021
Jul. 02, 2022
Jul. 03, 2021
Retirement Benefits [Abstract]        
Service cost pertaining to benefits earned during the period $ 1.4 $ 1.7 $ 2.7 $ 3.5
Interest cost on projected benefit obligations 3.3 3.2 6.6 6.4
Expected return on pension assets (5.2) (4.9) (10.3) (9.8)
Net amortization loss 2.8 3.5 5.6 6.9
Net pension expense $ 2.3 $ 3.5 $ 4.6 $ 7.0