SEGMENTS AND GEOGRAPHIC REGIONS Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Net sales	$ 10,764	$ 12,634	$ 32,747	$ 37,660
Business Acquisition, Pro Forma Revenue		12,697	32,794	37,844
Equity in earnings (losses) of nonconsolidated affiliates	(44)	135	(73)	529
Operating EBIT	1,117
Pro Forma Operating EBIT		1,611	3,319	4,947
Packaging & Specialty Plastics [Member]
Segment Reporting Information [Line Items]
Net sales	5,062	6,144	15,405	18,306
Business Acquisition, Pro Forma Revenue		6,157	15,405	18,339
Equity in earnings (losses) of nonconsolidated affiliates	23	83	135	250
Operating EBIT	798
Pro Forma Operating EBIT		857	2,256	2,754
Industrial Intermediates & Infrastructure [Member]
Segment Reporting Information [Line Items]
Net sales	3,365	3,910	10,187	11,677
Business Acquisition, Pro Forma Revenue		3,913	10,196	11,688
Equity in earnings (losses) of nonconsolidated affiliates	(70)	54	(196)	299
Operating EBIT	193
Pro Forma Operating EBIT		466	624	1,428
Performance Materials & Coatings [Member]
Segment Reporting Information [Line Items]
Net sales	2,250	2,505	6,888	7,456
Business Acquisition, Pro Forma Revenue		2,552	6,926	7,596
Equity in earnings (losses) of nonconsolidated affiliates	2	3	3	4
Operating EBIT	200
Pro Forma Operating EBIT		398	685	1,045
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net sales	87	75	267	221
Business Acquisition, Pro Forma Revenue		75	267	221
Equity in earnings (losses) of nonconsolidated affiliates	1	(5)	(15)	(24)
Operating EBIT	$ (74)
Pro Forma Operating EBIT		$ (110)	$ (246)	$ (280)