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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Millions	3 Months Ended
	Mar. 30, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balances	$ 1,097.4
Currency translation	(12.9)
Acquisition adjustments	(13.2)
Ending balances	1,071.3
Commercial & Industrial Group
Goodwill [Roll Forward]
Beginning balances	346.6
Currency translation	(8.0)
Acquisition adjustments	(13.2)
Ending balances	325.4
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	(4.9)
Acquisition adjustments	0.0
Ending balances	$ 733.5

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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