Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Millions	3 Months Ended
	Mar. 29, 2025 USD ($)
Goodwill [Roll Forward]
Beginning balances	$ 1,056.8
Currency translation	20.9
Ending balances	1,077.7
Commercial & Industrial Group
Goodwill [Roll Forward]
Beginning balances	315.6
Currency translation	12.5
Ending balances	328.1
Snap-on Tools Group
Goodwill [Roll Forward]
Beginning balances	12.4
Currency translation	0.0
Ending balances	12.4
Repair Systems & Information Group
Goodwill [Roll Forward]
Beginning balances	728.8
Currency translation	8.4
Ending balances	$ 737.2