GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Goodwill [Roll Forward]
Net goodwill, beginning of period	$ 9,846
Foreign currency impact	2
Net goodwill, end of period	9,848
Performance Materials & Coatings [Member]
Goodwill [Roll Forward]
Net goodwill, beginning of period	3,650
Foreign currency impact	7
Net goodwill, end of period	3,657
Industrial Intermediates & Infrastructure [Member]
Goodwill [Roll Forward]
Net goodwill, beginning of period	1,095
Foreign currency impact	(1)
Net goodwill, end of period	1,094
Packaging & Specialty Plastics [Member]
Goodwill [Roll Forward]
Net goodwill, beginning of period	5,101
Foreign currency impact	(4)
Net goodwill, end of period	$ 5,097