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SEGMENT AND REGIONAL SALES INFORMATION (Details) $ in Millions		3 Months Ended
		Mar. 31, 2020 USD ($) Segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | Segment		4
Sales [Abstract]
Sales		$ 2,241	$ 2,380
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		368	320
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	16,465		$ 16,008
Operating Segments [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		376	363
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	14,527		14,591
Corporate, Non-Segment [Member]
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	1,938		1,417
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		(23)	(27)
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		21	12
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	(28)
Other Nonoperating Income (Expense) [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(6)	0
Additives And Functional Products [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		822	855
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		143	146
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	6,375		6,387
Advanced Materials [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		615	657
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		100	102
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	4,429		4,415
Chemical Intermediates [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		592	655
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		80	73
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	2,703		2,775
Fibers [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		212	213
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		53	42
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	1,020		$ 1,014
North America [Member]
Sales [Abstract]
Sales		980	1,000
Asia Pacific [Member]
Sales [Abstract]
Sales		495	553
EMEA [Member]
Sales [Abstract]
Sales		631	689
Latin America [Member]
Sales [Abstract]
Sales		$ 135	$ 138
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