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Union Pension Plan - Summary of Multiple Employer Pension Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Multiemployer Plans [Line Items] |  |  |
Entity Tax Identification Number | 83-2583782 |  |
Contributions by Company | $ 6.4 | $ 5.9 | $ 4.8
Midwest Operating Engineers Local Union No. 150 Pension Trust Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
Entity Tax Identification Number | 36-6140097 |  |
Pension Protection Act Zone Status | Green | Green |
Pension Protection Act Zone Status | Mar. 31, 2024 | Mar. 31, 2023 |
Contributions by Company | $ 3.0 | $ 2.8 | 2.4
Surcharge Imposed | No |  |
Expiration Date of Collective-Bargaining | May 31, 2027 |  |
Operating Engineers Local Union No. 324 Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
Entity Tax Identification Number | 38-1900637 |  |
Pension Protection Act Zone Status | Red | Red |
Pension Protection Act Zone Status | Apr. 30, 2024 | Apr. 30, 2023 |
FIP/RP Status | Implemented |  |
Contributions by Company | $ 1.7 | $ 1.6 | 1.2
Surcharge Imposed | Yes |  |
Expiration Date of Collective-Bargaining | Sep. 30, 2027 |  |
All Other Multiemployer Pension Plans |  |  |
Multiemployer Plans [Line Items] |  |  |
Contributions by Company | $ 1.7 | $ 1.5 | $ 1.2

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