Revenue Recognition - Schedule of Revenue Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2026	Sep. 27, 2025	Oct. 03, 2026	Sep. 27, 2025
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,174.3	$ 1,182.1	$ 3,598.1	$ 3,486.3
Net sales	1,282.3	1,291.9	3,925.4	3,816.2
Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(146.8)	(147.7)	(441.7)	(417.3)
Commercial & Industrial Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	404.3	367.7	1,181.1	1,059.4
Snap-on Tools Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	471.5	506.0	1,466.3	1,459.9
Repair Systems & Information Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	454.7	464.8	1,420.3	1,409.3
Financial Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	98.6	101.1	299.4	304.9
Other revenues
Disaggregation of Revenue [Line Items]
Net sales	9.4	8.7	27.9	25.0
Product and Services, excluding Financial Services
Disaggregation of Revenue [Line Items]
Net sales	1,183.7	1,190.8	3,626.0	3,511.3
Product and Services, excluding Financial Services \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	1,183.7	1,190.8	3,626.0	3,511.3
Product and Services, excluding Financial Services \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	878.3	912.5	2,728.0	2,706.6
Product and Services, excluding Financial Services \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	305.4	278.3	898.0	804.7
Product and Services, excluding Financial Services \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	861.3	889.7	2,634.6	2,621.8
Product and Services, excluding Financial Services \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	186.8	181.5	602.7	545.1
Product and Services, excluding Financial Services \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	135.6	119.6	388.7	344.4
Product and Services, excluding Financial Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,330.5	1,338.5	4,067.7	3,928.6
Product and Services, excluding Financial Services \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(146.8)	(147.7)	(441.7)	(417.3)
Product and Services, excluding Financial Services \| Commercial & Industrial Group
Disaggregation of Revenue [Line Items]
Net sales	324.4	297.8	958.7	863.7
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	404.3	367.7	1,181.1	1,059.4
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	324.4	297.8	958.7	863.7
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	19.5	60.7	59.0
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	305.4	278.3	898.0	804.7
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	174.5	157.6	496.7	448.9
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	77.8	76.9	256.3	232.0
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	72.1	63.3	205.7	182.8
Product and Services, excluding Financial Services \| Commercial & Industrial Group \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(79.9)	(69.9)	(222.4)	(195.7)
Product and Services, excluding Financial Services \| Snap-on Tools Group
Disaggregation of Revenue [Line Items]
Net sales	471.5	506.0	1,466.3	1,459.9
Product and Services, excluding Financial Services \| Snap-on Tools Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	471.5	506.0	1,466.3	1,459.9
Product and Services, excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	471.5	506.0	1,466.3	1,459.9
Product and Services, excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	471.5	506.0	1,466.3	1,459.9
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	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	397.5	435.3	1,243.5	1,255.8
Product and Services, excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	42.7	41.9	129.9	122.5
Product and Services, excluding Financial Services \| Snap-on Tools Group \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	31.3	28.8	92.9	81.6
Product and Services, excluding Financial Services \| Snap-on Tools Group \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Repair Systems & Information Group
Disaggregation of Revenue [Line Items]
Net sales	387.8	387.0	1,201.0	1,187.7
Product and Services, excluding Financial Services \| Repair Systems & Information Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	454.7	464.8	1,420.3	1,409.3
Product and Services, excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	387.8	387.0	1,201.0	1,187.7
Product and Services, excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	387.8	387.0	1,201.0	1,187.7
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	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	289.3	296.8	894.4	917.1
Product and Services, excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	66.3	62.7	216.5	190.6
Product and Services, excluding Financial Services \| Repair Systems & Information Group \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	32.2	27.5	90.1	80.0
Product and Services, excluding Financial Services \| Repair Systems & Information Group \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	(66.9)	(77.8)	(219.3)	(221.6)
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments \| External Sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments \| External Sales \| Vehicle service professionals
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments \| External Sales \| All other professionals
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments \| External Sales \| North America
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments \| External Sales \| Europe
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Operating Segments \| External Sales \| All other
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Product and Services, excluding Financial Services \| Financial Services \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Financial services revenue
Disaggregation of Revenue [Line Items]
Net sales	98.6	101.1	299.4	304.9
Financial services revenue \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	98.6	101.1	299.4	304.9
Financial services revenue \| Intersegment net sales
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Financial services revenue \| Commercial & Industrial Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Financial services revenue \| Snap-on Tools Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Financial services revenue \| Repair Systems & Information Group \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0	0.0	0.0
Financial services revenue \| Financial Services
Disaggregation of Revenue [Line Items]
Net sales	98.6	101.1	299.4	304.9
Financial services revenue \| Financial Services \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 98.6	$ 101.1	$ 299.4	$ 304.9