SEPARATION FROM DOWDUPONT Separation, Distribution and Tax Agreements (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Apr. 01, 2019
Integration and separation costs	$ 46		$ 111
Charges related to separation, distribution and tax matters agreements		$ 127		$ 127
Integration and separation costs [Member]
Charges related to separation, distribution and tax matters agreements		24
Sundry Income (Expense), Net [Member]
Charges related to separation, distribution and tax matters agreements		52
Other Current Assets [Member]
Indemnification Asset	48		48		$ 58
Other noncurrent assets
Indemnification Asset	32		32		52
Accrued and Other Current Liabilities [Member]
Indemnification liability	321		321		352
Deferred cash contribution	130		130		130
Other Noncurrent Obligations [Member]
Indemnification liability	99		99		96
Deferred cash contribution	270		270		$ 270	$ 400
The Dow Chemical Company [Domain]
Integration and separation costs	$ 46	$ 324	$ 111	$ 776