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STOCK-BASED COMPENSATION (Summary of Weighted-Average Assumptions) (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Payment Arrangement [Abstract]      
Dividend yield 0.00% 0.00% 0.00%
Expected volatility 27.00% 28.00% 28.00%
Risk free interest rate 0.89% 2.51% 2.79%
Expected life of option from grant date 7 years 7 years 8 years
Weighted average grant date fair value of options granted (in dollars per share) $ 13.03 $ 18.74 $ 21.78