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Retirement and Other Employee Benefits (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 01, 2021
Sep. 25, 2020
Oct. 01, 2021
Sep. 25, 2020
Domestic Plan        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 1.5 $ 1.6 $ 4.5 $ 4.8
Interest cost 1.3 1.5 4.0 4.4
Expected return on assets (0.5) (0.6) (1.6) (1.8)
Amortization of net actuarial loss 0.1 0.3 0.4 0.9
Net periodic benefit costs 2.4 2.8 7.3 8.3
Foreign Plan        
Defined Benefit Plan Disclosure [Line Items]        
Net periodic benefit costs $ 0.9 $ 0.8 $ 2.7 $ 2.4