RELATED PARTY TRANSACTIONS	12 Months Ended
Dec. 31, 2012
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS The Corporation sells its products to Dow to simplify the customer interface process. Products are sold to and purchased from Dow at market-based prices in accordance with the terms of Dow’s intercompany pricing policies. The Corporation also procures certain commodities and raw materials through a Dow subsidiary and pays a commission to that Dow subsidiary based on the volume and type of commodities and raw materials purchased. The commission expense is included in “Sundry income (expense) - net” in the consolidated statements of operations. Purchases from that Dow subsidiary were approximately $3.1 billion in 2012, $3.5 billion in 2011 and $3.0 billion in 2010. The Corporation has a master services agreement with Dow whereby Dow provides services including, but not limited to, accounting, legal, treasury (investments, cash management, risk management, insurance), procurement, human resources, environmental, health and safety, and business management for UCC. Under the master services agreement with Dow, general administrative and overhead type services that Dow routinely allocates to various businesses are charged to UCC. The master services agreement cost allocation basis is headcount and includes a 10 percent service fee. This agreement resulted in expense of approximately $32 million in 2012 and $48 million in 2011 for general administrative and overhead type services and the 10 percent service fee, included in “Sundry income (expense) - net.” The decrease in general administrative and overhead type services including the service fee was due to a simplification of the cost structure and how items are allocated to UCC. The remaining activity-based costs were approximately $51 million in 2012 and $35 million in 2011 and were included in “Cost of sales.” The increase in 2012 activity-based costs was due to costs related to the restart of the cracker in St. Charles, Louisiana, in December 2012. Under the master services agreement in place for 2010, costs related to general administrative and overhead services were allocated to UCC based on the Corporation's and Dow's relative manufacturing conversion costs. This arrangement resulted in an average quarterly charge of approximately $5 million in 2010 included in "Sundry income (expense) - net." Additionally, for services that Dow routinely charged based on effort, UCC was charged the cost of such services on a fully absorbed basis in 2010, which included direct and indirect costs. Certain Dow employees were contracted to UCC and Dow was reimbursed for all direct employment costs of such employees. These activity-based costs were approximately $52 million in 2010 and were included in "Cost of sales." Management believes the method used for determining expenses charged by Dow is reasonable. Dow provides these services by leveraging its centralized functional service centers to provide services at a cost that management believes provides an advantage to the Corporation. The monitoring and execution of risk management policies related to interest rate and foreign currency risks, which are based on Dow’s risk management philosophy, are provided as a service to UCC. As part of Dow’s cash management process, UCC is a party to revolving loans with Dow that have interest rates based on LIBOR (London Interbank Offered Rate) with varying maturities. At December 31, 2012, the Corporation had a note receivable of $2.3 billion ($3.2 billion at December 2011) from Dow under a revolving loan agreement. The Corporation may draw from this note receivable in support of its daily working capital requirements and, as such, the net effect of cash inflows and outflows under this revolving loan agreement is presented in the consolidated statements of cash flows as an operating activity. The Corporation also has a separate revolving credit agreement with Dow that allows the Corporation to borrow or obtain credit enhancements up to an aggregate of $1 billion that matures at December 31, 2013. Dow may demand repayment with a 30-day written notice to the Corporation, subject to certain restrictions. A related collateral agreement provides for the replacement of certain existing pledged assets, primarily equity interests in various subsidiaries and joint ventures, with cash collateral. At December 31, 2012, $820 million ($870 million at December, 2011) was available under the revolving credit agreement. The cash collateral is reported as “Noncurrent receivables from related companies” in the consolidated balance sheets. In the fourth quarter of 2012, UCC recorded an impairment charge of $131 million related to its investment in Modeland International Holdings Inc. ("Modeland"), a related company, representing the difference between the investment's cost and its fair value. The impairment was triggered by an ownership reorganization of Modeland's subsidiairies. The amount of the impairment charge was calculated based on an appraisal of the fair value of Modeland's assets and liablities. The fair value was determined through the use of both income and market valuation approaches. The impairment charge is included in "Sundry income (expense) -net." Subsequent to recording the impairment charge, the Corporation also declared and paid a stock dividend to Dow for its ownership interest in Modeland totaling $9 million. During 2012, the Corporation declared and paid dividends totaling $784 million which included cash dividends to Dow totaling $775 million and a stock dividend to Dow of $9 million for its ownership interest in Modeland. During 2011, the Corporation declared and paid dividends totaling $951 million to Dow which included cash dividends to Dow totaling $950 million and a stock dividend to Dow for its ownership interest in Dow Venezuela C.A. totaling $1 million. The Corporation received cash dividends from its investments in related companies of $25 million in 2012 ($7 million in 2011) including $25 million ($5 million in 2011) from Dow Technology Investments, LLC. The Corporation received cash dividends from its investment in related companies of $40 million in 2010, including $20 million from GWN Holding, Inc. and $17 million from Modeland International Holdings Inc. These dividends were included in "Sundry income (expense) - net." In accordance with the Tax Sharing Agreement between the Corporation and Dow, the Corporation makes payments to Dow to cover the Corporation's estimated federal tax liability; payments were zero in 2012, $227 million in 2011 and $168 million in 2010. In 2011, the Corporation's estimated payments exceeded the estimated tax liability and a refund of approximately $42 million is recorded in "Accounts receivables - other" in the consolidated balance sheets at December 31, 2011.

RELATED PARTY TRANSACTIONS

The Corporation sells its products to Dow to simplify the customer interface process. Products are sold to and purchased from Dow at market-based prices in accordance with the terms of Dow’s intercompany pricing policies. The Corporation also procures certain commodities and raw materials through a Dow subsidiary and pays a commission to that Dow subsidiary based on the volume and type of commodities and raw materials purchased. The commission expense is included in “Sundry income (expense) - net” in the consolidated statements of operations. Purchases from that Dow subsidiary were approximately $3.1 billion in 2012, $3.5 billion in 2011 and $3.0 billion in 2010.

The Corporation has a master services agreement with Dow whereby Dow provides services including, but not limited to, accounting, legal, treasury (investments, cash management, risk management, insurance), procurement, human resources, environmental, health and safety, and business management for UCC. Under the master services agreement with Dow, general administrative and overhead type services that Dow routinely allocates to various businesses are charged to UCC. The master services agreement cost allocation basis is headcount and includes a 10 percent service fee.

This agreement resulted in expense of approximately $32 million in 2012 and $48 million in 2011 for general administrative and overhead type services and the 10 percent service fee, included in “Sundry income (expense) - net.” The decrease in general administrative and overhead type services including the service fee was due to a simplification of the cost structure and how items are allocated to UCC. The remaining activity-based costs were approximately $51 million in 2012 and $35 million in 2011 and were included in “Cost of sales.” The increase in 2012 activity-based costs was due to costs related to the restart of the cracker in St. Charles, Louisiana, in December 2012.

Under the master services agreement in place for 2010, costs related to general administrative and overhead services were allocated to UCC based on the Corporation's and Dow's relative manufacturing conversion costs. This arrangement resulted in an average quarterly charge of approximately $5 million in 2010 included in "Sundry income (expense) - net."

Additionally, for services that Dow routinely charged based on effort, UCC was charged the cost of such services on a fully absorbed basis in 2010, which included direct and indirect costs. Certain Dow employees were contracted to UCC and Dow was reimbursed for all direct employment costs of such employees. These activity-based costs were approximately $52 million in 2010 and were included in "Cost of sales."

Management believes the method used for determining expenses charged by Dow is reasonable. Dow provides these services by leveraging its centralized functional service centers to provide services at a cost that management believes provides an advantage to the Corporation.

The monitoring and execution of risk management policies related to interest rate and foreign currency risks, which are based on Dow’s risk management philosophy, are provided as a service to UCC.

As part of Dow’s cash management process, UCC is a party to revolving loans with Dow that have interest rates based on LIBOR (London Interbank Offered Rate) with varying maturities. At December 31, 2012, the Corporation had a note receivable of $2.3 billion ($3.2 billion at December 2011) from Dow under a revolving loan agreement. The Corporation may draw from this note receivable in support of its daily working capital requirements and, as such, the net effect of cash inflows and outflows under this revolving loan agreement is presented in the consolidated statements of cash flows as an operating activity.

The Corporation also has a separate revolving credit agreement with Dow that allows the Corporation to borrow or obtain credit enhancements up to an aggregate of $1 billion that matures at December 31, 2013. Dow may demand repayment with a 30-day written notice to the Corporation, subject to certain restrictions. A related collateral agreement provides for the replacement of certain existing pledged assets, primarily equity interests in various subsidiaries and joint ventures, with cash collateral. At December 31, 2012, $820 million ($870 million at December, 2011) was available under the revolving credit agreement. The cash collateral is reported as “Noncurrent receivables from related companies” in the consolidated balance sheets.

In the fourth quarter of 2012, UCC recorded an impairment charge of $131 million related to its investment in Modeland International Holdings Inc. ("Modeland"), a related company, representing the difference between the investment's cost and its fair value. The impairment was triggered by an ownership reorganization of Modeland's subsidiairies. The amount of the impairment charge was calculated based on an appraisal of the fair value of Modeland's assets and liablities. The fair value was determined through the use of both income and market valuation approaches. The impairment charge is included in "Sundry income (expense) -net." Subsequent to recording the impairment charge, the Corporation also declared and paid a stock dividend to Dow for its ownership interest in Modeland totaling $9 million.

During 2012, the Corporation declared and paid dividends totaling $784 million which included cash dividends to Dow totaling $775 million and a stock dividend to Dow of $9 million for its ownership interest in Modeland. During 2011, the Corporation declared and paid dividends totaling $951 million to Dow which included cash dividends to Dow totaling $950 million and a stock dividend to Dow for its ownership interest in Dow Venezuela C.A. totaling $1 million.

The Corporation received cash dividends from its investments in related companies of $25 million in 2012 ($7 million in 2011) including $25 million ($5 million in 2011) from Dow Technology Investments, LLC. The Corporation received cash dividends from its investment in related companies of $40 million in 2010, including $20 million from GWN Holding, Inc. and $17 million from Modeland International Holdings Inc. These dividends were included in "Sundry income (expense) - net."

In accordance with the Tax Sharing Agreement between the Corporation and Dow, the Corporation makes payments to Dow to cover the Corporation's estimated federal tax liability; payments were zero in 2012, $227 million in 2011 and $168 million in 2010. In 2011, the Corporation's estimated payments exceeded the estimated tax liability and a refund of approximately $42 million is recorded in "Accounts receivables - other" in the consolidated balance sheets at December 31, 2011.