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Pension Plans - (Tables)
3 Months Ended
Apr. 02, 2022
Retirement Benefits [Abstract]  
Schedule of Net Periodic Pension (Benefit) Cost
Snap-on’s net periodic pension (benefit) cost included the following components: 
Three Months Ended
(Amounts in millions)April 2, 2022April 3, 2021
Service cost$7.1 $7.5 
Interest cost11.1 10.6 
Expected return on plan assets(24.5)(23.6)
Amortization of unrecognized loss4.5 9.1 
Net periodic pension (benefit) cost$(1.8)$3.6