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STOCK-BASED COMPENSATION (Schedule of Assumed Stock Options) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grant term (in years) 10 years    
Employee Stock Option      
Number of Shares      
Balance, (in shares) 27,263    
Exercised (in shares) (12,141)    
Balance, (in shares) 15,122 27,263  
Weighted-Average Exercise Price      
Balance, (in dollars per share) $ 387    
Exercised (in dollars per share) 266    
Balance, (in dollars per share) $ 484 $ 387  
Aggregate Intrinsic Value (in millions)      
Aggregate Intrinsic Value $ 24 $ 36  
Weighted Average Remaining Contractual Term 2 years 7 months 6 days 2 years 9 months 18 days  
Vested and exercisable      
Number of Shares 15,122    
Weighted Average Exercise Price (in dollars per share) $ 484    
Aggregate Intrinsic Value $ 24    
Weighted Average Remaining Contractual Term 2 years 7 months 6 days    
Intrinsic value of exercised stock options $ 20 $ 5 $ 26