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Postretirement Health Care Plans - (Tables) | 9 Months Ended
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Sep. 30, 2023
Postemployment Benefits [Abstract] |
Schedule of Net Periodic Postretirement Health Care Cost | Snap-on’s net periodic postretirement health care cost included the following components:
| Three Months Ended |  | Nine Months Ended
(Amounts in millions) | September 30, 2023 |  | October 1, 2022 |  | September 30, 2023 |  | October 1, 2022
Interest cost | $ | 0.4 |  |  | $ | 0.3 |  |  | $ | 1.5 |  |  | $ | 0.9 |
Expected return on plan assets | (0.1) |  |  | (0.2) |  |  | (0.5) |  |  | (0.5) |
Amortization of unrecognized gain | (0.3) |  |  | — |  |  | (0.9) |  |  | — |
Net periodic postretirement health care cost | $ | — |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.4 |

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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