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Pension Plans
 3 Months Ended
Mar. 30, 2025
Retirement Benefits [Abstract]  
Pension Plans Pension Plans
 First Quarter
20252024
Service cost — benefits earned during the period (in millions)$1.5 $1.5 
Pension non-service cost (income) (in millions):
Interest cost on benefit obligation$7.9 $8.2 
Expected return on plan assets(13.4)(13.6)
Amortization of net prior service cost (income)0.1 (0.2)
Amortization of net actuarial loss (gain)2.8 2.9 
Pension non-service cost (income)$(2.6)$(2.7)