SEGMENTS AND GEOGRAPHIC REGIONS EBIT Reconciliation (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]
Operating EBIT	$ (21)	$ 819	$ 209	$ 1,493
Interest Income, Other	39	42	67	107
Interest Expense, Debt	209	197	425	396
Other Nonrecurring (Income) Expense	(468)	(56)	(884)	(147)
Income before income taxes	(659)	608	(1,033)	1,057
Net sales	10,104	10,915	20,535	21,680
Equity in earnings (losses) of nonconsolidated affiliates	(30)	26	(50)	43
Operating Segment Total
Segment Reporting Information [Line Items]
Operating EBIT	38	856	301	1,589
Other Nonrecurring (Income) Expense	(291)		(292)
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)
Packaging & Specialty Plastics [Member] | Operating Segments
Segment Reporting Information [Line Items]
Operating EBIT	71	703	413	1,308
Other Nonrecurring (Income) Expense	(158)		(158)
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
Industrial Intermediates & Infrastructure [Member] | Operating Segments
Segment Reporting Information [Line Items]
Operating EBIT	(185)	7	(313)	94
Other Nonrecurring (Income) Expense	14		13
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
Performance Materials & Coatings [Member] | Operating Segments
Segment Reporting Information [Line Items]
Operating EBIT	152	146	201	187
Other Nonrecurring (Income) Expense	(147)		(147)
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)