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EMPLOYEE BENEFIT PLANS - Schedule of Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost and Benefit Obligation (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Discount rate |  |  |  |
Discount rate | 4.52% | 4.74% | 2.69% | 2.47%
Pension Benefits |  |  |  |
Discount rate |  |  |  |
Discount rate | 4.52% | 4.74% |  |
Health Care Benefits |  |  |  |
Discount rate |  |  |  |
Discount rate | 4.87% | 5.17% |  |
Assumed health care cost trend rates at December 31: |  |  |  |
Health care cost trend rate assumed for next year | 6.00% | 5.93% |  |
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) | 3.99% | 4.13% |  |
Year that the rate reaches the ultimate trend rate | 2059 | 2054 |  |

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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 -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Year ultimate health care cost trend rate is expected to be reached, in YYYY format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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