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EMPLOYEE BENEFIT PLANS - Assumptions Used in Calculations (Details)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Benefits      
Assumptions used to determine benefit obligations at December 31:      
Discount rate     4.99%
Assumptions used to determine net periodic benefit cost for years ended December 31:      
Discount rate   5.00% 4.96%
Expected long-term return on plan assets   4.97% 4.97%
Postretirement      
Assumptions used to determine benefit obligations at December 31:      
Discount rate 5.42% 5.49% 4.81%
Assumptions used to determine net periodic benefit cost for years ended December 31:      
Discount rate 5.49% 4.81% 5.01%