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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Millions	6 Months Ended
	Jun. 29, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balances	$ 1,097.4
Currency translation	(16.3)
Acquisition adjustments	(13.2)
Ending balances	1,067.9
Commercial & Industrial Group
Goodwill [Roll Forward]
Beginning balances	346.6
Currency translation	(10.7)
Acquisition adjustments	(13.2)
Ending balances	322.7
Snap-on Tools Group
Goodwill [Roll Forward]
Beginning balances	12.4
Currency translation	0.0
Acquisition adjustments	0.0
Ending balances	12.4
Repair Systems & Information Group
Goodwill [Roll Forward]
Beginning balances	738.4
Currency translation	(5.6)
Acquisition adjustments	0.0
Ending balances	$ 732.8

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of increase (decrease) from measurement period adjustment of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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