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Pension Plans - Net Periodic Pension (Benefit) Cost (Details) - Pension Plans, Defined Benefit - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 28, 2025
Jun. 29, 2024
Jun. 28, 2025
Jun. 29, 2024
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 4.7 $ 5.0 $ 9.8 $ 10.0
Interest cost 16.5 16.4 33.1 32.8
Expected return on plan assets (22.8) (25.3) (45.8) (50.8)
Amortization of unrecognized loss 5.7 2.5 11.2 4.6
Net periodic pension cost (benefit) $ 4.1 $ (1.4) $ 8.3 $ (3.4)