Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION - Narratives (Details)

v3.10.0.1
REVENUE RECOGNITION - Narratives (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenue from Contract with Customer [Abstract]      
Provisions for doubtful receivables $ 118 $ 133 $ 116
Contract assets 234 170  
Deferred revenue 236 174  
Contract liability, current 5 31  
Contract liability, noncurrent $ 26 $ 0