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EMPLOYEE BENEFIT PLANS - Actuarial Assumptions & Weighted Average Assumptions (Details)
Dec. 31, 2023
Rate
Dec. 31, 2022
Rate
Retirement Pension Benefits    
Defined Contribution Plan Disclosure [Line Items]    
Discount rate 5.40% 5.75%
Compensation increase rate 3.65% 3.60%
Interest credit rating 4.03%  
Other Postretirement Benefits Plan    
Defined Contribution Plan Disclosure [Line Items]    
Discount rate 5.50% 5.75%