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SEGMENT INFORMATION (Details) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Segment	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | Segment				4
Sales [Abstract]
Sales		$ 2,621	$ 2,419	$ 5,228	$ 4,722
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		491	420	900	821
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	16,260		16,260		$ 15,999
Operating Segments [Member]
Sales [Abstract]
Sales		2,621	2,405	5,228	4,695
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		510	437	934	845
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	15,212		15,212		14,956
Corporate, Non-Segment [Member]
Sales [Abstract]
Sales		0	14	0	27
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(19)		(34)
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	1,048		1,048		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		(27)	(32)	(53)	(60)
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	41	36
Restructuring and acquisition integration and transaction costs [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(4)	0	(6)	0
Other Nonoperating Income (Expense) [Member] | Corporate, Non-Segment [Member]
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		(8)	(3)	(16)	0
Additives And Functional Products [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		942	830	1,881	1,603
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		192	161	368	314
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	6,703		6,703		6,648
Advanced Materials [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		729	657	1,422	1,291
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		150	137	285	258
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	4,512		4,512		4,379
Chemical Intermediates [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		709	703	1,439	1,373
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		85	83	155	165
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	2,993		2,993		3,000
Fibers [Member] | Operating Segments [Member]
Sales [Abstract]
Sales		241	215	486	428
Earnings (Loss) Before Interest and Taxes [Abstract]
Earnings before interest and taxes		83	56	126	108
Segment Reporting Information, Additional Information [Abstract]
Assets by Segment	[1]	1,004		1,004		$ 929
North America [Member]
Sales [Abstract]
Sales		1,108	1,088	2,208	2,154
Asia Pacific [Member]
Sales [Abstract]
Sales		639	581	1,281	1,093
EMEA [Member]
Sales [Abstract]
Sales		725	624	1,452	1,224
Latin America [Member]
Sales [Abstract]
Sales		$ 149	$ 126	$ 287	$ 251
[1] Segment assets include accounts receivable, inventory, fixed assets, goodwill, and intangible assets.

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