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INCENTIVE PLANS (Weighted-Average Fair Value and Weighted-Average Assumptions Used in Estimating Fair Value of Grants) (Details) - SOSARs [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value $ 38.90 $ 43.72 $ 43.01
Risk-free interest rate 2.62% 2.90% 2.36%
Dividend yield 0.87% 1.39% 1.27%
Volatility 27.23% 31.49% 31.35%
Expected term (years) 9 years 9 years 9 years