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SHARE-BASED COMPENSATION PLANS (Details)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 2.80% 2.04%
Expected dividend yield 2.47% 3.15%
Expected term (in years) 8 years 8 years
Expected volatility 19.90% 19.70%