SEGMENTS AND GEOGRAPHIC REGIONS Significant Items (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs		$ (46)		$ (111)
Restructuring Charges	$ (43)	(6)	$ (53)	(102)
Charges related to separation, distribution and tax matters agreements	(5)		(5)
Gain (Loss) Related to Litigation Settlement		6		6
Gain (Loss) on Extinguishment of Debt	(102)	0	(102)	(86)
Other Nonrecurring (Income) Expense	(198)	(46)	(241)	(293)
Digitalization program costs	(48)		(81)
Packaging & Specialty Plastics [Member]
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs		0		0
Restructuring Charges	(8)	(6)	(8)	(12)
Charges related to separation, distribution and tax matters agreements	0		0
Gain (Loss) Related to Litigation Settlement		6		6
Gain (Loss) on Extinguishment of Debt	0	0	0	0
Other Nonrecurring (Income) Expense	(8)	0	(8)	(6)
Digitalization program costs	0		0
Industrial Intermediates & Infrastructure [Member]
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs		0		0
Restructuring Charges	(1)	0	(1)	0
Charges related to separation, distribution and tax matters agreements	0		0
Gain (Loss) Related to Litigation Settlement		0		0
Gain (Loss) on Extinguishment of Debt	0	0	0	0
Other Nonrecurring (Income) Expense	(1)	0	(1)	0
Digitalization program costs	0		0
Performance Materials & Coatings [Member]
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs		0		0
Restructuring Charges	(10)	0	(10)	0
Charges related to separation, distribution and tax matters agreements	0		0
Gain (Loss) Related to Litigation Settlement		0		0
Gain (Loss) on Extinguishment of Debt	0	0	0	0
Other Nonrecurring (Income) Expense	(10)	0	(10)	0
Digitalization program costs	0		0
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Business Combination, Integration Related Costs		(46)		(111)
Restructuring Charges	(24)	0	(34)	(90)
Charges related to separation, distribution and tax matters agreements	(5)		(5)
Gain (Loss) Related to Litigation Settlement		0		0
Gain (Loss) on Extinguishment of Debt	(102)	0	(102)	(86)
Other Nonrecurring (Income) Expense	(179)	$ (46)	(222)	$ (287)
Digitalization program costs	$ (48)		$ (81)

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Digitalization program costs

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of other expense (income) that is infrequent in occurrence or unusual in nature.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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