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Commitments and Contingencies - (Tables)
9 Months Ended
Sep. 28, 2019
Commitments and Contingencies Disclosure [Abstract]  
Summary of Product Warranty Accrual Activity
Snap-on’s product warranty accrual activity for the three and nine months ended September 28, 2019, and September 29, 2018, is as follows:
Three Months EndedNine Months Ended
(Amounts in millions)September 28, 2019September 29, 2018September 28, 2019September 29, 2018
Warranty reserve:
Beginning of period$17.8  $17.5  $17.1  $17.2  
Additions3.8  3.0  12.5  10.9  
Usage(4.6) (3.3) (12.6) (10.9) 
End of period$17.0  $17.2  $17.0  $17.2