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Postretirement Plans (Tables)
 12 Months Ended
Dec. 30, 2017
Other Postretirement Benefit Plans, Defined Benefit [Member]  
Summary of Weighted-Average Assumptions Used to Determine Accumulated Benefit Obligation

The weighted-average discount rate used to determine Snap-on’s accumulated benefit obligation is as follows:

 

          2017                2016       

Discount rate

    3.6%    4.1%