DIVESTITURES (Divestiture of Investments in Nonconsolidated Affiliates) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Sep. 30, 2009	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of ownership interests in nonconsolidated affiliates		$ 93	$ 113	$ 1,413
Gain (loss) on the sale of equity method investments, pretax		61	25	795
TRN [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of ownership interests in nonconsolidated affiliates	742
Gain (loss) on the sale of equity method investments, pretax		0	0	513
Loss on discontinuation of cash flow hedge due to forecasted transaction probable of not occurring	56
OPTIMAL [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of ownership interests in nonconsolidated affiliates	660
Gain (loss) on the sale of equity method investments, pretax	339	0	0	339
Feedstocks and Energy [Member] | TRN [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on the sale of equity method investments, net, pretax	457
Gain (loss) on the sale of equity method investments, pretax	513
Loss on discontinuation of cash flow hedge due to forecasted transaction probable of not occurring	56
Feedstocks and Energy [Member] | OPTIMAL [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on the sale of equity method investments, pretax	193
Performance Materials [Member] | OPTIMAL [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on the sale of equity method investments, pretax	$ 146