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Pension Plans
6 Months Ended
Jul. 03, 2022
Retirement Benefits [Abstract]  
Pension Plans Pension Plans
 Second QuarterSix Months
2022202120222021
Service cost — benefits earned during the period (in millions)$2.1 $2.7 $4.3 $5.4 
Pension non-service income (in millions):
Interest cost on benefit obligation$5.9 $5.6 $11.8 $11.2 
Expected return on plan assets(14.1)(14.2)(28.1)(28.5)
Amortization of net prior service cost(0.4)(0.9)(0.9)(1.7)
Amortization of net actuarial loss5.7 6.6 11.5 13.3 
Pension non-service income$(2.9)$(2.9)$(5.7)$(5.7)