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Union Pension Plan (Tables) | 12 Months Ended
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Dec. 31, 2024
Retirement Benefits [Abstract] |
Summary of Multiple Employer Pension Plans | Multiple Employer Pension Plans:
Pension Fund |  | EIN |  | Pension Protection Act Zone Status & Plan Year- End |  | FIP/RP Status |  | Contributions of Alta Equipment Group Inc. and Subsidiaries |  |  | Surcharge Imposed |  | Expiration Date of Collective- Bargaining Agreement
|  |  |  | 2024 |  | 2023 |  |  |  | 2024 |  |  | 2023 |  |  | 2022 |  |  |  |  |
Midwest Operating Engineers Local Union No. 150 Pension Trust Fund |  | 36-6140097 |  | Green 3/31/2024 |  | Green 3/31/2023 |  | None |  | $ | 3.0 |  |  | $ | 2.8 |  |  | $ | 2.4 |  |  | No |  | 5/31/2027
Operating Engineers Local Union No. 324 Pension Fund |  | 38-1900637 |  | Red 4/30/2024 |  | Red 4/30/2023 |  | Implemented |  |  | 1.7 |  |  |  | 1.6 |  |  |  | 1.2 |  |  | Yes |  | 9/30/2027
All Other Multiemployer Pension Plans (1) |  |  |  |  |  |  |  |  |  |  | 1.7 |  |  |  | 1.5 |  |  |  | 1.2 |  |  |  |  | Various
|  |  |  |  |  |  |  |  |  | $ | 6.4 |  |  | $ | 5.9 |  |  | $ | 4.8 |  |  |  |  |
(1) All Other Multiemployer Pension Plans includes 13 plans, none of which are individually significant when considering contributions to the plan, severity of the underfunded status, or other factors.

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