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EMPLOYEE BENEFIT PLANS - Major Assumptions Used in Determining the Benefit Obligation and Net Cost for Pension Plans (Details) - Pension Plan
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Benefit Obligation      
Projected benefit obligation 2.10% 1.40%  
Salary scale 3.10% 2.80%  
Net Costs      
Projected benefit obligation 1.40% 2.00% 2.80%
Interest cost 1.20% 1.80% 2.70%
Service cost 2.10% 1.80% 3.20%
Salary scale 2.80% 3.30% 3.00%
Expected return on plan assets 4.60% 4.90% 5.60%