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EMPLOYEE BENEFIT PLANS - Weighted-average assumptions used to determine net periodic benefit cost (Details) - Defined Benefit Pension Items | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |
Discount rate | 5.45% | 2.81% | 2.48%
Expected return on plan assets | 7.00% | 7.00% | 7.00%
Ages 25-34 |  |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |
Rate of compensation increase | 5.00% | 2.50% | 2.50%
Ages 35-44 |  |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |
Rate of compensation increase | 4.00% | 2.50% | 2.50%
Ages 45-54 |  |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |
Rate of compensation increase | 3.00% | 2.50% | 2.50%
Ages 55+ |  |  |
WEIGHTED AVERAGE ASSUMPTIONS: |  |  |
Rate of compensation increase | 2.50% | 2.50% | 2.50%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost 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 Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost 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 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related 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)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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