Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES - PURCHASE COMMITMENTS AND OPERATING LEASES (Details)

v3.8.0.1
COMMITMENTS AND CONTINGENCIES - PURCHASE COMMITMENTS AND OPERATING LEASES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
COMMITMENTS AND CONTINGENCIES      
Minimum contracts period which require minimum volume purchases 1 year    
Minimum payments under purchase commitments $ 0 $ 1 $ 0
Purchase commitments:      
2018 1,299    
2019 1,285    
2020 701    
2021 499    
2022 495    
Thereafter 2,087    
Total 6,366    
Operating Leases      
Rent expense 80 81 86
Sublease rentals 2 $ 2 $ 2
Future minimum lease payments      
2018 74    
2019 67    
2020 60    
2021 54    
2022 49    
Thereafter 134    
Total 438    
Minimum sublease rentals $ 2