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Pension and Other Postretirement Plans - Schedule Of Obligations And Funded Status (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 28, 2025
Sep. 29, 2024
Sep. 28, 2025
Sep. 29, 2024
Pension Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0.0 $ 0.0 $ 0.0 $ 0.0
Interest cost 0.0 1.3 0.7 3.9
Expected return on plan assets 0.0 (1.0) (0.6) (3.1)
Settlement charge     0.2 0.0
Net periodic cost 0.0 0.3 0.3 0.8
Postretirement Benefits        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0.1 0.1 0.4 0.4
Interest cost 0.1 0.1 0.3 0.3
Expected return on plan assets 0.0 0.0 0.0 0.0
Settlement charge     0.0 0.0
Net periodic cost $ 0.2 $ 0.2 $ 0.7 $ 0.7