Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Narrative (Details)

v3.10.0.1
SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized 33    
Shares available for grant 26    
Tax benefit realized from exercise of options $ 10 $ 5 $ 3
Granted (in USD per share) $ 14.98 $ 11.13 $ 9.59
Total fair value of awards vested $ 62 $ 53 $ 31
Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 52 16 11
Award vesting period 4 years    
Cash received for exercises of stock options $ 5 $ 11 $ 14
Total unrecognized compensation cost related to nonvested awards $ 96    
Cost not yet recognized period for recognition 2 years 4 months    
Stock Option | Prior to May 2004      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards expiration period 10 years    
Stock Option | After May 2004      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards expiration period 7 years    
Restricted Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in USD per share) $ 0.00    
Performance Share Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Granted (in USD per share) $ 14.81