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EQUITY - INFORMATION ABOUT NON-QUALIFIED STOCK OPTIONS OUTSTANDING (Details) - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted Average Remaining Contractual Life (in years) 5 years 3 months 18 days  
Nonqualified Stock Options    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number Outstanding (in shares) 4.0 3.8
Weighted Average Remaining Contractual Life (in years) 5 years 3 months 18 days  
Weighted Average Exercise Price (in dollars per share) $ 50.01 $ 50.02
Number Exercisable (in shares) 2.7 2.7
Weighted Average Exercise Price Exercisable (in dollars per share) $ 50.28 $ 48.85
Nonqualified Stock Options | Exercise Prices: $30.01 - $40.00    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Range of Exercise Prices, lower range limit (in dollars per share) 30.01  
Range of Exercise Prices, upper range limit (in dollars per share) $ 40.00  
Number Outstanding (in shares) 0.4  
Weighted Average Remaining Contractual Life (in years) 1 year 6 months  
Weighted Average Exercise Price (in dollars per share) $ 37.54  
Number Exercisable (in shares) 0.4  
Weighted Average Exercise Price Exercisable (in dollars per share) $ 37.55  
Nonqualified Stock Options | Exercise Prices: $40.01 - $50.00    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Range of Exercise Prices, lower range limit (in dollars per share) 40.01  
Range of Exercise Prices, upper range limit (in dollars per share) $ 50.00  
Number Outstanding (in shares) 2.0  
Weighted Average Remaining Contractual Life (in years) 6 years 3 months 18 days  
Weighted Average Exercise Price (in dollars per share) $ 46.83  
Number Exercisable (in shares) 0.9  
Weighted Average Exercise Price Exercisable (in dollars per share) $ 45.22  
Nonqualified Stock Options | Exercise Prices: $50.01 - $60.00    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Range of Exercise Prices, lower range limit (in dollars per share) 50.01  
Range of Exercise Prices, upper range limit (in dollars per share) $ 60.00  
Number Outstanding (in shares) 1.2  
Weighted Average Remaining Contractual Life (in years) 4 years 9 months 18 days  
Weighted Average Exercise Price (in dollars per share) $ 54.82  
Number Exercisable (in shares) 1.0  
Weighted Average Exercise Price Exercisable (in dollars per share) $ 54.69  
Nonqualified Stock Options | Exercise Prices: $60.01 - $70.00    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Range of Exercise Prices, lower range limit (in dollars per share) 60.01  
Range of Exercise Prices, upper range limit (in dollars per share) $ 70.00  
Number Outstanding (in shares) 0.4  
Weighted Average Remaining Contractual Life (in years) 5 years 2 months 12 days  
Weighted Average Exercise Price (in dollars per share) $ 62.26  
Number Exercisable (in shares) 0.4  
Weighted Average Exercise Price Exercisable (in dollars per share) $ 62.25