Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Narrative (Details)

v3.6.0.2
SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized 30.0    
Shares available for grant 16.0    
Cash received for exercises of stock options $ 14 $ 26 $ 21
Tax benefit realized from stock option exercises $ 3 $ 7 $ 4
Granted (in USD per share) $ 9.59 $ 10.86 $ 9.09
Total fair value of awards vested $ 31 $ 30 $ 26
Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 4 years    
Total unrecognized compensation cost related to nonvested awards $ 81    
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    
Performance Share Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Granted (in USD per share) $ 9.04