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STOCK-BASED COMPENSATION PLANS - Schedule of Share-Based Fair Value of Each Option Grant Weighted-Average Assumptions (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Payment Arrangement [Abstract]      
Dividend yield (as a percent) 0.60% 0.66% 0.31%
Risk-free interest rate (as a percent) 1.50% 2.60% 2.80%
Stock price volatility (as a percent) 28.10% 25.80% 23.90%
Expected life (years) 5 years 5 years 5 years
Weighted average fair value of options granted during the year (in dollars per share) $ 21.05 $ 19.54 $ 20.59