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PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Target Allocation and Actual Asset Allocations for Pension and VEBA Plan Assets (Details) | Dec. 31, 2023 | Dec. 31, 2022
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Pension Benefits |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 100.00% |
Percentage of Plan Assets | 100.00% | 100.00%
Pension Benefits | Equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 33.80% |
Percentage of Plan Assets | 32.10% | 36.10%
Pension Benefits | Fixed income |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 41.10% |
Percentage of Plan Assets | 38.80% | 40.90%
Pension Benefits | Hedge funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 9.40% |
Percentage of Plan Assets | 9.40% | 2.70%
Pension Benefits | Private equity |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 3.30% |
Percentage of Plan Assets | 3.40% | 3.30%
Pension Benefits | Structured credit |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 2.40% |
Percentage of Plan Assets | 5.10% | 6.90%
Pension Benefits | Real estate |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 10.00% |
Percentage of Plan Assets | 11.20% | 8.20%
Pension Benefits | Absolute return fixed income |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 0.00% |
Percentage of Plan Assets | 0.00% | 1.90%
OPEB |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 100.00% |
Percentage of Plan Assets | 100.00% | 100.00%
OPEB | Equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 16.60% |
Percentage of Plan Assets | 18.40% | 22.00%
OPEB | Fixed income |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 78.50% |
Percentage of Plan Assets | 74.50% | 67.40%
OPEB | Hedge funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 1.40% |
Percentage of Plan Assets | 1.50% | 1.90%
OPEB | Private equity |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 0.00% |
Percentage of Plan Assets | 0.00% | 0.00%
OPEB | Structured credit |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 0.20% |
Percentage of Plan Assets | 0.90% | 1.20%
OPEB | Real estate |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 3.30% |
Percentage of Plan Assets | 4.70% | 1.70%
OPEB | Absolute return fixed income |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
2024 Target Allocation | 0.00% |
Percentage of Plan Assets | 0.00% | 5.80%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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