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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Jun. 30, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Mark-to-market loss (gain) net on pension plans |  |  | $ 28.4 | $ 9.4 | $ (17.2) |
Discount rate | 2.47% |  | 4.74% | 2.69% | 2.47% | 3.19%
Settlement |  | $ 1.1 |  |  |  |
Pension Benefits |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Discount rate |  |  | 4.74% | 2.69% |  |
Curtailment | $ 5.3 |  | $ 0.0 | $ 0.6 | $ 6.4 |
Employer contributions to defined benefit plans |  |  | $ 8.0 |  |  |
Health Care Benefits |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Discount rate |  |  | 5.17% | 2.85% |  |
Curtailment |  |  | $ 0.0 | $ 0.3 | $ 0.0 |
Employer contributions to defined benefit plans |  |  | $ 1.3 |  |  |

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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