SEGMENTS AND GEOGRAPHIC REGIONS Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Net sales	$ 10,104	$ 10,915	$ 20,535	$ 21,680
Equity in earnings (losses) of nonconsolidated affiliates	(30)	26	(50)	43
Operating EBIT	(21)	819	209	1,493
UNITED STATES
Segment Reporting Information [Line Items]
Net sales	3,725	3,909	7,671	7,738
Europe, Middle East, Africa and India [Domain]
Segment Reporting Information [Line Items]
Net sales	3,272	3,572	6,546	7,056
Rest of World [Domain]
Segment Reporting Information [Line Items]
Net sales	3,107	3,434	6,318	6,886
Segment Reporting, Reconciling Item, Corporate Nonsegment
Segment Reporting Information [Line Items]
Net sales	164	206	359	381
Operating EBIT	(59)	(37)	(92)	(96)
Operating Segment Total
Segment Reporting Information [Line Items]
Net sales	9,940	10,709	20,176	21,299
Operating Cost of Goods and Services Sold	9,374	9,334	18,806	18,601
SARD	484	537	1,002	1,125
Equity in earnings (losses) of nonconsolidated affiliates	(31)	26	(50)	42
Segment Reporting, Other Segment Item, Amount	(13)	(8)	(17)	(26)
Operating EBIT	38	856	301	1,589
Packaging & Specialty Plastics [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	5,025	5,515	10,335	10,945
Operating Cost of Goods and Services Sold	4,728	4,616	9,493	9,213
SARD	221	253	461	508
Equity in earnings (losses) of nonconsolidated affiliates	7	55	46	80
Segment Reporting, Other Segment Item, Amount	(12)	2	(14)	4
Operating EBIT	71	703	413	1,308
Industrial Intermediates & Infrastructure [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,786	2,951	5,641	5,959
Operating Cost of Goods and Services Sold	2,832	2,803	5,654	5,579
SARD	116	127	243	263
Equity in earnings (losses) of nonconsolidated affiliates	(39)	(31)	(97)	(46)
Segment Reporting, Other Segment Item, Amount	16	17	40	23
Operating EBIT	(185)	7	(313)	94
Performance Materials & Coatings [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,129	2,243	4,200	4,395
Operating Cost of Goods and Services Sold	1,814	1,915	3,659	3,809
SARD	147	157	298	354
Equity in earnings (losses) of nonconsolidated affiliates	1	2	1	8
Segment Reporting, Other Segment Item, Amount	(17)	(27)	(43)	(53)
Operating EBIT	$ 152	$ 146	$ 201	$ 187