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MULTI-EMPLOYER WITHDRAWAL LIABILITIES (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Multiemployer withdrawal liability |  |
Quarterly payments to ILA-PRSSA over an estimated period | $ 1.0 |
Estimated future benefit payments |  |
Current portion of withdrawal liability | (4.1) | $ (10.6)
Long-term portion of withdrawal liability | 50.8 | 52.8
Horizon | ILA-PRSSA Pension Fund |  |
Estimated future benefit payments |  |
2022 | 4.1 |
2023 | 4.1 |
2024 | 4.1 |
2025 | 4.1 |
2026 | 4.1 |
Thereafter | 55.5 |
Total remaining future undiscounted payments due | 76.0 |
Less: amount representing interest | (21.1) |
Present value of remaining withdrawal liability | 54.9 |
Current portion of withdrawal liability | (4.1) |
Long-term portion of withdrawal liability | $ 50.8 |
Horizon | Local 153 Fund of the OPEIU |  |
Estimated future benefit payments |  |
Present value of remaining withdrawal liability |  | $ 6.5

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- Definition Represents the total amount of benefits from a defined benefit plan expected to be paid. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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