GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 8,780	$ 8,796
Goodwill, Foreign Currency Translation Gain (Loss)	(16)
Packaging & Specialty Plastics [Member]
Goodwill [Line Items]
Goodwill	5,108	5,109
Goodwill, Foreign Currency Translation Gain (Loss)	(1)
Industrial Intermediates & Infrastructure [Member]
Goodwill [Line Items]
Goodwill	1,099	1,100
Goodwill, Foreign Currency Translation Gain (Loss)	(1)
Performance Materials & Coatings [Member]
Goodwill [Line Items]
Goodwill	2,573	$ 2,587
Goodwill, Foreign Currency Translation Gain (Loss)	$ (14)