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Postretirement Health Care Plans (Details) - Postretirement Health Coverage - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Oct. 01, 2022
Sep. 30, 2023
Oct. 01, 2022
Postretirement Health Care Plans [Line Items]        
Interest cost $ 0.4 $ 0.3 $ 1.5 $ 0.9
Expected return on plan assets (0.1) (0.2) (0.5) (0.5)
Amortization of unrecognized gain (0.3) 0.0 (0.9) 0.0
Net periodic (pension benefit) postretirement healthcare cost $ 0.0 $ 0.1 $ 0.1 $ 0.4