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SEGMENT INFORMATION (Details) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) Segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | Segment				4
Sales [Abstract]
Sales		$ 2,547	$ 2,465	$ 7,775	$ 7,187
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		517	464	1,417	1,285
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	16,362		16,362		$ 15,999
Operating Segments [Member]
Sales [Abstract]
Sales		2,547	2,452	7,775	7,147
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		532	480	1,466	1,325
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	15,264		15,264		14,956
Corporate, Non-Segment [Member]
Sales [Abstract]
Sales		0	13	0	40
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(15)		(49)
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	1,098		1,098		1,043
Growth Initiatives and Businesses not Allocated to Segments [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(26)	(32)	(79)	(92)
Pension and OPEB Costs Not Allocated to Operating Segments [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		20	18	61	54
Restructuring and acquisition integration and transaction costs [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		0	0	(6)	0
Other Nonoperating Income (Expense) [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(9)	(2)	(25)	(2)
Additives And Functional Products [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		915	886	2,796	2,489
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		186	189	554	503
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	6,721		6,721		6,648
Advanced Materials [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		709	646	2,131	1,937
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		153	142	438	400
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	4,561		4,561		4,379
Chemical Intermediates [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		703	696	2,142	2,069
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		109	81	264	246
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	2,996		2,996		3,000
Fibers [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		220	224	706	652
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		84	68	210	176
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	986		986		$ 929
North America [Member]
Sales [Abstract]
Sales		1,083	1,057	3,291	3,211
Asia Pacific [Member]
Sales [Abstract]
Sales		665	612	1,946	1,705
EMEA [Member]
Sales [Abstract]
Sales		649	658	2,101	1,882
Latin America [Member]
Sales [Abstract]
Sales		$ 150	$ 138	$ 437	$ 389
[1] Segment assets include accounts receivable, inventory, fixed assets, goodwill, and intangible assets.

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