Aquisitions and Dispositions	3 Months Ended
Mar. 31, 2012
Acquisitions and Dispositions	4. ACQUISITION AND DISPOSITION ACQUISITION 2012 BlueStar Energy (Generation and Marketing segment) In March 2012, we completed the acquisition of BlueStar Energy Holdings, Inc. (BlueStar) and its independent retail electric supplier BlueStar Energy Solutions for $70 million, subject to potential working capital adjustments. This transaction also included goodwill of $14 million, intangible assets associated with sales contracts and customer accounts of $59 million and liabilities associated with supply contracts of $25 million. These amounts are subject to revision once further evaluations are complete. BlueStar provides electric supply for retail customers in Ohio, Illinois and other deregulated electricity markets and also provides energy solutions throughout the United States, including demand response and energy efficiency services. BlueStar has been in operation since 2002 and has approximately 23,000 customer accounts. DISPOSITION 2011 Electric Transmission Texas LLC (ETT) (Utility Operations segment) During the three months ended March 31, 2011, TCC sold $5 million of transmission facilities to ETT. There were no gains or losses recorded on these sale transactions.

Tabular disclosure of all information related to any significant acquisition and disposal. Disclosure may include methodology and assumptions, type of asset, asset classification, useful life, useful purpose, acquisition cost, method of acquisition or disposal, depreciation method, gain (loss) on disposal pretax and net of tax, date of acquisition or disposal and restrictions on amount of proceeds from donated assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 47

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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