REVENUE (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	22 years		22 years
Revenues	$ 10,764	$ 12,634	$ 32,747	$ 37,660
Contract with Customer, Liability, Revenue Recognized			100	110
Contract with Customer, Asset, Reclassified to Receivable			15
Accounts and notes receivable - Trade	5,125		5,125		$ 5,646
Contract assets - current 1	78		78		19
Contract assets - noncurrent 2	3		3		1
Contract liabilities - current 3	201		201		134
Contract liabilities - noncurrent 4	1,619		1,619		1,318
U.S. & Canada
Revenues	3,932	4,609	11,937	13,602
EMEAI 1
Revenues	3,621	4,386	11,228	13,257
Asia Pacific
Revenues	2,193	2,362	6,464	7,030
Latin America
Revenues	1,018	1,277	3,118	3,771
Packaging & Specialty Plastics [Member]
Revenues	5,062	6,144	15,405	18,306
Packaging & Specialty Plastics [Member] \| Hydrocarbons & Energy [Member]
Revenues	1,325	2,008	4,078	5,715
Packaging & Specialty Plastics [Member] \| Packaging and Specialty Plastics [Member]
Revenues	3,737	4,136	11,327	12,591
Industrial Intermediates & Infrastructure [Member]
Revenues	3,365	3,910	10,187	11,677
Industrial Intermediates & Infrastructure [Member] \| Industrial Solutions [Member]
Revenues	1,066	1,232	3,263	3,621
Industrial Intermediates & Infrastructure [Member] \| Polyurethanes & CAV [Member]
Revenues	2,295	2,674	6,914	8,045
Industrial Intermediates & Infrastructure [Member] \| Other [Member]
Revenues	4	4	10	11
Performance Materials & Coatings [Member]
Revenues	2,250	2,505	6,888	7,456
Performance Materials & Coatings [Member] \| Coatings and Performance Monomers [Member]
Revenues	900	1,050	2,749	3,103
Performance Materials & Coatings [Member] \| Consumer Solutions [Member]
Revenues	1,350	1,455	4,139	4,353
Corporate Segment [Member]
Revenues	87	$ 75	$ 267	$ 221
Product [Member]
Revenue, Percentage from Products and Service Transferred to Customers			98.00%	99.00%
Licensing of Technology [Member] [Member]
Revenue, Remaining Performance Obligation, Amount	$ 611		$ 611		$ 407

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

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Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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