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BUSINESS COMBINATIONS (Details) (USD $) In Millions	3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
BUSINESS COMBINATIONS (Details) (USD $) In Millions	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Apr. 02, 2011 Laffans Petrochemicals Limited	Sep. 30, 2010 HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES	Sep. 30, 2011 HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES	Sep. 30, 2010 HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES
Estimated pro forma revenues and net income (loss) attributable
Acquisition cost				$ 23
Fair value of assets acquired and liabilities assumed:
Accounts receivable				10
Inventories				2
Other current assets				2
Property, plant and equipment				14
Accounts payable				(3)
Accrued liabilities				(1)
Other noncurrent liabilities				(1)
Total fair value of net assets acquired				23
Estimated pro forma revenues and net income (loss) attributable on business acquisition
Revenues	2,414	8,603	6,875		2,414	8,603	6,875
Net income (loss) attributable to business acquisition	$ 55	$ 143	$ (3)		$ 58	$ 150	$ 149