SEGMENTS AND GEOGRAPHIC REGIONS Segment Reporting Information - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 10,706	$ 9,712	$ 8,354	$ 9,770	$ 10,204	$ 10,764	$ 11,014	$ 10,969	$ 38,542	$ 42,951	$ 49,604
Business Acquisition, Pro Forma Revenue										42,998	49,852
Restructuring, goodwill impairment and asset related charges - net	(11)	$ 617	$ 6	$ 96	2,851	$ 147	$ 65	$ 156	708	3,219	221
Equity in earnings (losses) of nonconsolidated affiliates									(18)	(94)	555
Operating EBIT									2,715
Pro Forma Operating EBIT										4,352	6,236
Depreciation and amortization									2,874	2,938	2,909
Total Assets	61,470				60,524				61,470	60,524
Total Assets, Excluding Discontinued Operations											63,799
Investment in nonconsolidated affiliates	1,327				1,404				1,327	1,404	3,320
Capital expenditures									1,252	1,961	2,091
Disposal Group, Including Discontinued Operation, Assets											19,900
Packaging & Specialty Plastics [Member]
Segment Reporting Information [Line Items]
Net sales									18,301	20,245	24,195
Business Acquisition, Pro Forma Revenue										20,245	24,237
Restructuring, goodwill impairment and asset related charges - net									30	439	46
Equity in earnings (losses) of nonconsolidated affiliates									173	162	287
Operating EBIT									2,325
Pro Forma Operating EBIT										2,904	3,593
Depreciation and amortization									1,372	1,435	1,385
Total Assets	30,069				29,522				30,069	29,522
Total Assets, Excluding Discontinued Operations											30,279
Investment in nonconsolidated affiliates	661				675				661	675	1,278
Capital expenditures									678	1,039	1,231
Industrial Intermediates & Infrastructure [Member]
Segment Reporting Information [Line Items]
Net sales									12,021	13,440	15,447
Business Acquisition, Pro Forma Revenue										13,449	15,465
Restructuring, goodwill impairment and asset related charges - net									22	1,175	11
Equity in earnings (losses) of nonconsolidated affiliates									(166)	(241)	284
Operating EBIT									355
Pro Forma Operating EBIT										845	1,767
Depreciation and amortization									605	594	607
Total Assets	12,220				11,753				12,220	11,753
Total Assets, Excluding Discontinued Operations											14,092
Investment in nonconsolidated affiliates	531				568				531	568	1,850
Capital expenditures									268	452	433
Performance Materials & Coatings [Member]
Segment Reporting Information [Line Items]
Net sales									7,951	8,923	9,677
Business Acquisition, Pro Forma Revenue										8,961	9,865
Restructuring, goodwill impairment and asset related charges - net									192	1,076	21
Equity in earnings (losses) of nonconsolidated affiliates									6	5	4
Operating EBIT									314
Pro Forma Operating EBIT										918	1,246
Depreciation and amortization									870	877	888
Total Assets	13,915				14,059				13,915	14,059
Total Assets, Excluding Discontinued Operations											16,050
Investment in nonconsolidated affiliates	108				101				108	101	99
Capital expenditures									306	470	427
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net sales									269	343	285
Business Acquisition, Pro Forma Revenue										343	285
Restructuring, goodwill impairment and asset related charges - net									464	529	143
Equity in earnings (losses) of nonconsolidated affiliates									(31)	(20)	(20)
Operating EBIT									(279)
Pro Forma Operating EBIT										(315)	(370)
Depreciation and amortization									27	32	29
Total Assets	5,266				5,190				5,266	5,190
Total Assets, Excluding Discontinued Operations											3,378
Investment in nonconsolidated affiliates	$ 27				$ 60				27	60	93
Capital expenditures									$ 0	$ 0	$ 0