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EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost: Weighted Average Assumptions (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Pension Benefits |  |
Employee benefit plans |  |
Discount rate - employee pension plan | 3.08% | 3.20%
Long-term rate of return on plan assets | 6.50% | 6.25%
Rate of compensation increases | 4.00% | 3.25%
Cost of living adjustment | 2.10% | 2.50%
Cost of living adjustment | 2.20% | 2.10%
Pension Benefits | SERP |  |
Employee benefit plans |  |
Discount rate - employee pension plan | 2.97% | 3.20%
Rate of compensation increases | 5.00% | 3.75%
Pension Benefits | Other Benefits |  |
Employee benefit plans |  |
Discount rate - employee pension plan | 0.00% | 0.00%
Other Benefits |  |
Employee benefit plans |  |
Discount rate - employee pension plan | 0.00% | 0.00%
Long-term rate of return on plan assets | 6.00% | 5.50%
Rate of compensation increases | 0.00% | 0.00%
Cost of living adjustment | 0.00% | 0.00%
Cost of living adjustment | 0.00% | 0.00%
Other Benefits | SERP |  |
Employee benefit plans |  |
Discount rate - employee pension plan | 0.00% | 0.00%
Rate of compensation increases | 0.00% | 0.00%
Other Benefits | Other Benefits |  |
Employee benefit plans |  |
Discount rate - employee pension plan | 3.03% | 3.25%

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- Definition Represents the cost of living adjustment, an assumption used in determining the benefit obligation for the benefit plans. + References No definition available. + Details
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- Definition Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Cost of Living Adjustment + References No definition available. + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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