Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 29, 2025	Mar. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,133.3	$ 1,175.2
Net sales	1,243.2	1,281.9
Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(141.6)	(141.5)
Commercial & Industrial Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	343.9	359.9
Snap-on Tools Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	462.9	500.1
Repair Systems & Information Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	475.9	463.8
Financial services revenue \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	102.1	99.6
Other revenues
Disaggregation of Revenue [Line Items]
Net sales	7.8	7.1
Product and Services, Excluding Financial Services
Disaggregation of Revenue [Line Items]
Net sales	1,141.1	1,182.3
Product and Services, Excluding Financial Services \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	1,141.1	1,182.3
Product and Services, Excluding Financial Services \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	883.4	911.6
Product and Services, Excluding Financial Services \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	257.7	270.7
Product and Services, Excluding Financial Services \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	853.4	884.0
Product and Services, Excluding Financial Services \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	177.9	182.7
Product and Services, Excluding Financial Services \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	109.8	115.6
Product and Services, Excluding Financial Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,282.7	1,323.8
Product and Services, Excluding Financial Services \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(141.6)	(141.5)
Product and Services, Excluding Financial Services \| Commercial & Industrial Group
Disaggregation of Revenue [Line Items]
Net sales	276.7	291.0
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	343.9	359.9
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	276.7	291.0
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	19.0	20.3
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	257.7	270.7
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	140.6	148.6
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	77.1	81.0
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	59.0	61.4
Product and Services, Excluding Financial Services \| Commercial & Industrial Group \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(67.2)	(68.9)
Product and Services, Excluding Financial Services \| Snap-on Tools Group
Disaggregation of Revenue [Line Items]
Net sales	462.9	500.1
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	462.9	500.1
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	462.9	500.1
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	462.9	500.1
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	395.1	433.3
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	41.6	39.6
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	26.2	27.2
Product and Services, Excluding Financial Services \| Snap-on Tools Group \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Repair Systems & Information Group
Disaggregation of Revenue [Line Items]
Net sales	401.5	391.2
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	475.9	463.8
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	401.5	391.2
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	401.5	391.2
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	317.7	302.1
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	59.2	62.1
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	24.6	27.0
Product and Services, Excluding Financial Services \| Repair Systems & Information Group \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(74.4)	(72.6)
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Product and Services, Excluding Financial Services \| Financial services revenue \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue
Disaggregation of Revenue [Line Items]
Net sales	102.1	99.6
Financial services revenue \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	102.1	99.6
Financial services revenue \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Commercial & Industrial Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Snap-on Tools Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Repair Systems & Information Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Financial services revenue \| Financial services revenue
Disaggregation of Revenue [Line Items]
Net sales	102.1	99.6
Financial services revenue \| Financial services revenue \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 102.1	$ 99.6