SEPARATION FROM DOWDUPONT Separation, Distribution and Tax Agreements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Apr. 01, 2019
Cash receipt related to divestiture	$ 6
Integration and separation costs	65	$ 452
Discontinued Operations [Member]
Cash receipt related to divestiture	3
Continuing Operations [Member]
Cash receipt related to divestiture	3
Other Current Assets [Member]
Indemnification Asset	51		$ 58
Other noncurrent assets
Indemnification Asset	32		52
Accrued and Other Current Liabilities [Member]
Indemnification liability	319		352
Deferred cash contribution	130		130
Other Noncurrent Obligations [Member]
Indemnification liability	105		96
Deferred cash contribution	270		$ 270	$ 400
The Dow Chemical Company [Domain]
Integration and separation costs	$ 65	$ 452