DIVESTITURE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration	$ 17
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	5
Additional Paid-in Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Capital contribution from The Dow Chemical Company	$ 3	$ 0	$ 0