Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 30, 2024	Apr. 01, 2023
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,175.2	$ 1,176.5
Net sales	1,281.9	1,275.6
Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	(141.5)	(164.4)
Commercial & Industrial Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	359.9	363.8
Snap-on Tools Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	500.1	537.0
Repair Systems & Information Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	463.8	446.6
Financial Services \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	99.6	92.6
Other revenues
Disaggregation of Revenue [Line Items]
Net sales	7.1	6.5
Total net sales
Disaggregation of Revenue [Line Items]
Net sales	1,182.3	1,183.0
Total net sales \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	1,182.3	1,183.0
Total net sales \| Vehicle service professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	911.6	925.5
Total net sales \| All other professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	270.7	257.5
Total net sales \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	1,323.8	1,347.4
Total net sales \| Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	(141.5)	(164.4)
Total net sales \| Commercial & Industrial Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	359.9	363.8
Total net sales \| Commercial & Industrial Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	291.0	278.6
Total net sales \| Commercial & Industrial Group \| Total assets from reportable segments \| Vehicle service professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	20.3	21.1
Total net sales \| Commercial & Industrial Group \| Total assets from reportable segments \| All other professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	270.7	257.5
Total net sales \| Commercial & Industrial Group \| Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	68.9	85.2
Total net sales \| Snap-on Tools Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	500.1	537.0
Total net sales \| Snap-on Tools Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	500.1	537.0
Total net sales \| Snap-on Tools Group \| Total assets from reportable segments \| Vehicle service professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	500.1	537.0
Total net sales \| Snap-on Tools Group \| Total assets from reportable segments \| All other professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Snap-on Tools Group \| Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Repair Systems & Information Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	463.8	446.6
Total net sales \| Repair Systems & Information Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	391.2	367.4
Total net sales \| Repair Systems & Information Group \| Total assets from reportable segments \| Vehicle service professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	391.2	367.4
Total net sales \| Repair Systems & Information Group \| Total assets from reportable segments \| All other professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Repair Systems & Information Group \| Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	72.6	79.2
Total net sales \| Financial Services \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Financial Services \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Financial Services \| Total assets from reportable segments \| Vehicle service professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Financial Services \| Total assets from reportable segments \| All other professionals \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Financial Services \| Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| North America \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	884.0	893.3
Total net sales \| North America \| Commercial & Industrial Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	148.6	137.6
Total net sales \| North America \| Snap-on Tools Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	433.3	473.9
Total net sales \| North America \| Repair Systems & Information Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	302.1	281.8
Total net sales \| North America \| Financial Services \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| Europe \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	182.7	173.9
Total net sales \| Europe \| Commercial & Industrial Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	81.0	75.0
Total net sales \| Europe \| Snap-on Tools Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	39.6	35.7
Total net sales \| Europe \| Repair Systems & Information Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	62.1	63.2
Total net sales \| Europe \| Financial Services \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Total net sales \| All other \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	115.6	115.8
Total net sales \| All other \| Commercial & Industrial Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	61.4	66.0
Total net sales \| All other \| Snap-on Tools Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	27.2	27.4
Total net sales \| All other \| Repair Systems & Information Group \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	27.0	22.4
Total net sales \| All other \| Financial Services \| Total assets from reportable segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue
Disaggregation of Revenue [Line Items]
Net sales	99.6	92.6
Financial services revenue \| Intersegment eliminations
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Commercial & Industrial Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Snap-on Tools Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Repair Systems & Information Group \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Financial Services
Disaggregation of Revenue [Line Items]
Net sales	99.6	92.6
Financial services revenue \| Financial Services \| Total assets from reportable segments
Disaggregation of Revenue [Line Items]
Net sales	$ 99.6	$ 92.6