SEPARATION FROM DOWDUPONT Separation, Distribution and Tax Agreements (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Charges related to separation, distribution and tax matters agreements	$ 0			$ 127
Cash payment related to divestiture			$ 187
Cash receipt related to divestiture			63
Integration and separation costs	164	$ 313		964	$ 799
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	109		109	109
Other noncurrent assets
Indemnification Asset	16		16	16
Accrued and Other Current Liabilities [Member]
Indemnification liability	368		368	368
Other Noncurrent Obligations [Member]
Indemnification liability	154		154	154
Deferred cash contribution	400		$ 400	400
The Dow Chemical Company [Domain]
Integration and separation costs	$ 164	$ 313		$ 940	$ 799