OPERATING SEGMENTS AND GEOGRAPHIC AREAS (Certain Items by Segment) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017		Mar. 31, 2016
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		$ (135)	[1]	$ (65)	[2]
Certain items, excluded from Operating EBITDA		(604)		(1,300)
Agricultural Sciences [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		0	[1]	0	[2]
Certain items, excluded from Operating EBITDA		(469)		0
Consumer Solutions [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		0	[1]	0	[2]
Certain items, excluded from Operating EBITDA		0		0
Infrastructure Solutions [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		0	[1]	0	[2]
Certain items, excluded from Operating EBITDA		0		0
Performance Materials & Chemicals [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		0	[1]	0	[2]
Certain items, excluded from Operating EBITDA		0		(1,235)
Performance Plastics [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		0	[1]	0	[2]
Certain items, excluded from Operating EBITDA		0		0
Segment Reconciling Items [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		(135)	[1]	(65)	[2]
Certain items, excluded from Operating EBITDA		(135)		(65)
Bayer Arbitration [Domain]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	(469)
Bayer Arbitration [Domain] | Agricultural Sciences [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	(469)
Bayer Arbitration [Domain] | Consumer Solutions [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	0
Bayer Arbitration [Domain] | Infrastructure Solutions [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	0
Bayer Arbitration [Domain] | Performance Materials & Chemicals [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	0
Bayer Arbitration [Domain] | Performance Plastics [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	0
Bayer Arbitration [Domain] | Segment Reconciling Items [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[3]	0
Urethane Antitrust Litigation and Opt-out Cases [Domain]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			(1,235)
Urethane Antitrust Litigation and Opt-out Cases [Domain] | Agricultural Sciences [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			0
Urethane Antitrust Litigation and Opt-out Cases [Domain] | Consumer Solutions [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			0
Urethane Antitrust Litigation and Opt-out Cases [Domain] | Infrastructure Solutions [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			0
Urethane Antitrust Litigation and Opt-out Cases [Domain] | Performance Materials & Chemicals [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			(1,235)
Urethane Antitrust Litigation and Opt-out Cases [Domain] | Performance Plastics [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			0
Urethane Antitrust Litigation and Opt-out Cases [Domain] | Segment Reconciling Items [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Loss Contingency, Loss in Period	[4]			0
Reclassification to earnings - Cost of sales
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		(23)		(23)
Selling, General and Administrative Expenses [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Transactions and productivity costs		$ (112)		$ (42)

[1] Primarily financial, legal and professional advisory fees associated with the planned all-stock merger of equals with E. I. du Pont de Nemours and Company ("DuPont") as well as implementation costs associated with the ownership restructure of Dow Corning and the Company's restructuring programs, which were included in "Cost of sales" ($23 million) and "Selling, general and administrative expenses" ($112 million) in the consolidated statements of income.

[2] Primarily financial, legal and professional advisory fees associated with the planned all-stock merger of equals with DuPont, the ownership restructure of Dow Corning and implementation costs associated with the 2015 Restructuring program, which were included in "Cost of sales" ($23 million) and "Selling, general and administrative expenses" ($42 million) in the consolidated statements of income.

[3] Included in "Sundry income (expense) - net." See Note 10 for additional information.

[4] Included in "Sundry income (expense) - net." See Note 10 for additional information.