VARIABLE INTEREST ENTITIES (Nonconsolidated Variable Interest Entity) (Details) - USD ($) $ in Millions		Apr. 04, 2017	Sep. 30, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Investment in nonconsolidated affiliates			$ 3,975	$ 3,747
Other			5,214	4,312
AFSI [Member]
Variable Interest Entity [Line Items]
Disposal Group, Including Discontinued Operations, Consderation Receivable, Number of Investment Warrants		6,000,000
Equity Method Investment, Shares Purchased		5,070,358
Equity Method Investment, Percentage of Outstanding Common Stock Purchased		10.00%
Variable Interest Entity, Not Primary Beneficiary [Member] | Hemlock Semiconductor LLC [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount			0	0
Equity Method Investment, Liability, Noncurrent	[1]		(850)	(902)
Variable Interest Entity, Not Primary Beneficiary [Member] | Silicon Inputs Joint Ventures [Member]
Variable Interest Entity [Line Items]
Investment in nonconsolidated affiliates	[2]		97	96
Variable Interest Entity, Not Primary Beneficiary [Member] | Acrylic Acid Joint Venture [Member]
Variable Interest Entity [Line Items]
Investment in nonconsolidated affiliates	[2]		160	171
Variable Interest Entity, Not Primary Beneficiary [Member] | AFSI [Member]
Variable Interest Entity [Line Items]
Investment in nonconsolidated affiliates	[2],[3]		44	46
Other	[3],[4]		4	12
Disposal Group, Including Discontinued Operation, Consideration Receivable, Investment Warrants, Value	[3],[4]		$ 0	$ 1

[1] Classified as "Other noncurrent obligations" in the consolidated balance sheets. The Company's maximum exposure to loss was zero at September 30, 2017 (zero at December 31, 2016).

[2] Classified as "Investment in nonconsolidated affiliates" in the consolidated balance sheets.

[3] On April 4, 2017, the Company and AgroFresh Solutions, Inc ("AFSI") revised certain agreements related to the divestiture of the AgroFresh business, including termination of the agreement related to Dow's receivable for six million warrants. The Company also entered into an agreement to purchase up to 5,070,358 shares of AFSI's common stock, which represented approximately 10 percent of AFSI's common stock outstanding at signing of the agreement, subject to certain terms and conditions.

[4] Classified as "Accounts and notes receivable - Other" in the consolidated balance sheets.