RELATED PARTY TRANSACTIONS (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Related Party Transaction [Line Items]
Document Period End Date			Sep. 30, 2014
Payments of Dividends			$ 1,010,000,000	$ 219,000,000
Dividend, Noncash, Ownership interest in Subsidiary		70,000,000		70,000,000
Proceeds from Dividends Received	2,000,000	0	11,000,000	5,000,000
The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	756,000,000	803,000,000	2,187,000,000	2,317,000,000
Service Fee with Parent			10.00%
Notes Receivable, Related Parties	1,500,000,000		1,500,000,000		2,400,000,000
Line of Credit Facility, Maximum Borrowing Capacity	1,000,000,000		1,000,000,000
Notes Receivable, Related Parties, Noncurrent	871,000,000		871,000,000		843,000,000
Payments of Dividends	355,000,000	50,000,000	1,000,000,000	219,000,000
Related Party Transaction, Other Revenues from Transactions with Related Party	145,000,000
Sundry income (expense) [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	6,000,000	6,000,000	19,000,000	19,000,000
Gain (Loss) on Sale of Assets and Asset Impairment Charges	66,000,000
Cost of Sales [Member] | The Dow Chemical Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Expenses from Transactions with Related Party	$ 13,000,000	$ 11,000,000	$ 37,000,000	$ 35,000,000
Union Carbide Subsidiary C, Inc. [Member]
Related Party Transaction [Line Items]
Ownership Interest, Subsidiary		100.00%		100.00%