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Postretirement Health Care Plans - (Tables)
9 Months Ended
Oct. 01, 2022
Postemployment Benefits [Abstract]  
Schedule of Net Periodic Postretirement Health Care Cost
Snap-on’s net periodic postretirement health care cost included the following components: 
Three Months EndedNine Months Ended
(Amounts in millions)October 1, 2022October 2, 2021October 1, 2022October 2, 2021
Interest cost$0.3 $0.3 $0.9 $0.9 
Expected return on plan assets(0.2)(0.1)(0.5)(0.5)
Net periodic postretirement health care cost$0.1 $0.2 $0.4 $0.4