XML 171 R131.htm IDEA: XBRL DOCUMENT v3.8.0.1
GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Goodwill      
Balance of goodwill at beginning of period $ 21,659 $ 22,349 $ 23,592
Foreign exchange translation and other 729 (613) (1,000)
Divestitures (104) (77) (212)
Impairment of goodwill (28)   (31)
Balance of goodwill at end of period $ 22,256 $ 21,659 $ 22,349