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EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Assumptions Used to Determine Net Periodic Benefit Cost (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Plan [Member]    
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS    
Discount rate 2.30% 3.10%
Expected return on plan assets 4.81% 4.99%
Discount rate 2.60% 2.30%
Other Postretirement Benefits Plan [Member]    
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS    
Discount rate 2.50% 3.25%
Discount rate 3.00% 2.50%