SEGMENTS AND GEOGRAPHIC REGIONS Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 9,770	$ 10,969
Business Acquisition, Pro Forma Revenue		11,016
Equity in losses of nonconsolidated affiliates	(89)	(14)
Operating EBIT	843
Pro Forma Operating EBIT		1,143
Packaging & Specialty Plastics [Member]
Segment Reporting Information [Line Items]
Net sales	4,609	5,138
Business Acquisition, Pro Forma Revenue		5,138
Equity in losses of nonconsolidated affiliates	5	38
Operating EBIT	580
Pro Forma Operating EBIT		690
Industrial Intermediates & Infrastructure [Member]
Segment Reporting Information [Line Items]
Net sales	3,045	3,480
Business Acquisition, Pro Forma Revenue		3,489
Equity in losses of nonconsolidated affiliates	(76)	(48)
Operating EBIT	175
Pro Forma Operating EBIT		277
Performance Materials & Coatings [Member]
Segment Reporting Information [Line Items]
Net sales	2,065	2,282
Business Acquisition, Pro Forma Revenue		2,320
Equity in losses of nonconsolidated affiliates	1	0
Operating EBIT	162
Pro Forma Operating EBIT		271
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net sales	51	69
Business Acquisition, Pro Forma Revenue		69
Equity in losses of nonconsolidated affiliates	(19)	(4)
Operating EBIT	$ (74)
Pro Forma Operating EBIT		$ (95)