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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Goodwill [Roll Forward]
Beginning balances	$ 1,045.3
Currency translation	(9.4)
Ending balances	1,035.9
Commercial & Industrial Group
Goodwill [Roll Forward]
Beginning balances	302.9
Currency translation	(5.9)
Ending balances	297.0
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	730.0
Currency translation	(3.5)
Ending balances	$ 726.5

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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+ Details

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Balance Type:	debit
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X

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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