GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Goodwill (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill	$ 8,801	$ 8,796
Goodwill, Foreign Currency Translation Gain (Loss)	5
Packaging & Specialty Plastics [Member]
Goodwill [Line Items]
Goodwill	5,109	5,109
Goodwill, Foreign Currency Translation Gain (Loss)	0
Industrial Intermediates & Infrastructure [Member]
Goodwill [Line Items]
Goodwill	1,100	1,100
Goodwill, Foreign Currency Translation Gain (Loss)	0
Performance Materials & Coatings [Member]
Goodwill [Line Items]
Goodwill	2,592	$ 2,587
Goodwill, Foreign Currency Translation Gain (Loss)	$ 5