GOODWILL AND OTHER INTANGIBLE ASSETS (Annual Goodwill Impairment Test) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($) ReportingUnits	Dec. 31, 2020 USD ($) ReportingUnits	Dec. 31, 2019 USD ($) ReportingUnits
Goodwill [Line Items]
Number of Reporting Units, Quantitative Testing | ReportingUnits		0	1	2
Goodwill	$ 8,796	$ 8,764	$ 8,908	$ 8,796
Coatings and Performance Monomers
Goodwill [Line Items]
Goodwill	0			0
Industrial Intermediates & Infrastructure [Member]
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss		309	309
Goodwill	1,100	1,096	1,100	1,100
Performance Materials & Coatings [Member]
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss		2,530	2,530
Goodwill, Impairment Loss	1,039
Goodwill	$ 2,587	$ 2,563	$ 2,693	$ 2,587