Business And Significant Accounting Policies	9 Months Ended
Sep. 30, 2015
Accounting Policies [Abstract]
Business And Significant Accounting Policies	BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES Description of Business References in this report to "we," "our," "us" and "the Company" are to EFCH and/or its subsidiaries, as apparent in the context. See Glossary for defined terms. EFCH, a Delaware limited liability company and a wholly owned subsidiary of EFH Corp., is a Dallas, Texas-based holding company. We conduct our operations almost entirely through our wholly owned subsidiary, TCEH. TCEH is a holding company for subsidiaries engaged in competitive electricity market activities largely in Texas, including electricity generation, wholesale energy sales and purchases, commodity risk management and trading activities and retail electricity operations. Key management activities, including commodity risk management and electricity sourcing for our retail and wholesale customers, are performed on an integrated basis; consequently, there are no reportable business segments. Bankruptcy Proceeding On April 29, 2014 (the Petition Date), EFH Corp. and the substantial majority of its direct and indirect subsidiaries, including EFIH, EFCH and TCEH but excluding the Oncor Ring-Fenced Entities (collectively, the Debtors), filed voluntary petitions for relief (the Bankruptcy Filing) under Chapter 11 of the United States Bankruptcy Code (the Bankruptcy Code) in the United States Bankruptcy Court for the District of Delaware (the Bankruptcy Court). In September 2015, the Debtors filed the Plan of Reorganization and the Disclosure Statement. The Disclosure Statement was approved by the Bankruptcy Court in September 2015. In October 2015, the Debtors filed a plan supplement to the Plan of Reorganization that provides greater detail about the Plan of Reorganization and the Debtors post-emergence structure (the Plan Supplement). Following the approval of the Disclosure Statement by the Bankruptcy Court, the Debtors solicited the vote of their required creditors for approval of the Plan of Reorganization. In October 2015, the required creditors voted to approve the Plan of Reorganization. The Bankruptcy Court hearing to review the Plan of Reorganization for confirmation is scheduled to begin on November 3, 2015. The Debtors cannot predict the outcome of the confirmation hearing. See Note 2 for further discussion regarding the Chapter 11 Cases and the Plan of Reorganization and the Disclosure Statement. Basis of Presentation, Including Application of Bankruptcy Accounting The condensed consolidated financial statements have been prepared in accordance with US GAAP. The condensed consolidated financial statements have been prepared as if EFCH is a going concern and contemplate the realization of assets and liabilities in the normal course of business. The condensed consolidated financial statements reflect the application of Financial Accounting Standards Board Accounting Standards Codification (ASC) 852, Reorganizations. During the pendency of the Chapter 11 Cases, the Debtors will operate their businesses as debtors-in-possession under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. ASC 852 applies to entities that have filed a petition for bankruptcy under Chapter 11 of the Bankruptcy Code. The guidance requires that transactions and events directly associated with the reorganization be distinguished from the ongoing operations of the business. In addition, the guidance provides for changes in the accounting and presentation of liabilities. See Notes 7 and 9 for discussion of these accounting and reporting changes. Adjustments (consisting of normal recurring accruals) necessary for a fair presentation of the results of operations and financial position have been included therein. All intercompany items and transactions have been eliminated in consolidation. Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with US GAAP have been omitted pursuant to the rules and regulations of the SEC. Because the condensed consolidated interim financial statements do not include all of the information and footnotes required by US GAAP, they should be read in conjunction with the audited financial statements and related notes included in our 2014 Form 10-K. The results of operations for an interim period may not give a true indication of results for a full year. All dollar amounts in the financial statements and tables in the notes are stated in millions of US dollars unless otherwise indicated. A variable interest entity (VIE) is an entity with which we have a relationship or arrangement that indicates some level of control over the entity or results in economic risks to us. Accounting standards require consolidation of a VIE if we have (a) the power to direct the significant activities of the VIE and (b) the right or obligation to absorb profit and loss from the VIE (i.e., we are the primary beneficiary of the VIE). Prior to the fourth quarter of 2014, we consolidated as a VIE Comanche Peak Nuclear Power Company LLC (CPNPC), a joint venture formed by subsidiaries of TCEH and Mitsubishi Heavy Industries Ltd. (MHI) for the purpose of developing two new nuclear generation units at our existing Comanche Peak nuclear fueled generation facility. In the fourth quarter of 2014, the MHI subsidiary withdrew from the joint venture. As a result, the TCEH subsidiary owns 100% of CPNPC, CPNPC no longer qualifies as a VIE and CPNPC is now consolidated as a wholly owned subsidiary. Activity related to the VIE in the nine months ended September 30, 2014 was immaterial. There are no material investments accounted for under the equity or cost method. Use of Estimates Preparation of financial statements requires estimates and assumptions about future events that affect the reporting of assets and liabilities at the balance sheet dates and the reported amounts of revenue and expense, including fair value measurements and estimates of expected allowed claims. In the event estimates and/or assumptions prove to be different from actual amounts, adjustments are made in subsequent periods to reflect more current information. Changes in Accounting Standards In April 2014, the FASB issued Accounting Standards Update No. 2014-08 (ASU 2014-08), Presentation of Financial Statements (Topic 205) and Property Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the requirements for reporting discontinued operations. The ASU states that a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has or will have a major effect on an entity's operations and financial results when the component of an entity or group of components of an entity meets the criteria to be classified as held for sale, is disposed of by sale, or is disposed of other than by sale. The amendments in this ASU also require additional disclosures about discontinued operations. ASU 2014-08 is effective for the Company for the first quarter of 2015. This new requirement is relevant to our presentation of TCEH. Based on our analysis, ASU 2014-08 will not materially affect our results of operations, financial position, or cash flows, unless a spin-off of TCEH is approved by the Bankruptcy Court (see Note 2), at which time presentation as discontinued operations may be appropriate. In April 2015, the FASB issued Accounting Standards Update 2015-03 (ASU 2015-03), Simplifying Balance Sheet Presentation by Presenting Debt Issuance Costs as a Deduction from Recognized Debt Liability. The ASU is effective for annual reporting periods, including interim reporting periods within those periods, beginning after December 15, 2015. Early adoption is permitted. The new standard requires debt issuance costs to be classified as reductions to the face value of the related debt. We do not expect ASU 2015-03 to materially affect our financial position until we issue new debt. During the Chapter 11 Cases, debt issuance costs on prepetition debt subject to compromise will continue to be reported in liabilities subject to compromise. In August 2015, the FASB issued Accounting Standards Update 2015-15 (ASU 2015-15), Interest-Imputation of Interest (Topic 835-30) Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line of Credit Arrangements. ASU 2015-15 provides guidance on the presentation of debt issuance costs associated with line-of-credit arrangements. Given the absence of authoritative guidance within ASU 2015-03 for debt issuance costs related to line-of-credit arrangements, ASU 2015-15 allows an entity to defer and present debt issuance costs as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the line-of-credit. In May 2015, the FASB issued Accounting Standards Update 2015-07 (ASU 2015-07), Disclosures for Investments in Certain Entities that Calculate Net Asset Value Per Share (or its Equivalent). The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, with retrospective application to all periods presented. Early adoption is permitted. ASU 2015-07 removes the requirement to categorize within the fair value hierarchy investments for which fair values are estimated using the net asset value practical expedient provided by Accounting Standards Codification 820, Fair Value Measurement. Disclosures about investments in certain entities that calculate net asset value per share are limited under ASU 2015-07 to those investments for which the entity has elected to estimate the fair value using the net asset value practical expedient. We are currently evaluating the impact of the adoption of this ASU on our financial statements. In August 2015, the FASB issued Accounting Standards Update 2015-13, Derivatives and Hedging (Topic 815), Application of the Normal Purchases and Normal Sales Scope Exception to Certain Electricity Contracts within Nodal Energy Markets. The ASU clarified that the use of locational marginal pricing by an independent system operator does not constitute net settlement of a contract for the purchase or sale of electricity if all the criterion of the normal purchase and normal sale scope exception are met, including physical delivery. The ASU was effective upon issuance and did not impact our financial statements.

BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES

Description of Business

References in this report to "we," "our," "us" and "the Company" are to EFCH and/or its subsidiaries, as apparent in the context. See Glossary for defined terms.

EFCH, a Delaware limited liability company and a wholly owned subsidiary of EFH Corp., is a Dallas, Texas-based holding company. We conduct our operations almost entirely through our wholly owned subsidiary, TCEH. TCEH is a holding company for subsidiaries engaged in competitive electricity market activities largely in Texas, including electricity generation, wholesale energy sales and purchases, commodity risk management and trading activities and retail electricity operations. Key management activities, including commodity risk management and electricity sourcing for our retail and wholesale customers, are performed on an integrated basis; consequently, there are no reportable business segments.

Bankruptcy Proceeding

On April 29, 2014 (the Petition Date), EFH Corp. and the substantial majority of its direct and indirect subsidiaries, including EFIH, EFCH and TCEH but excluding the Oncor Ring-Fenced Entities (collectively, the Debtors), filed voluntary petitions for relief (the Bankruptcy Filing) under Chapter 11 of the United States Bankruptcy Code (the Bankruptcy Code) in the United States Bankruptcy Court for the District of Delaware (the Bankruptcy Court). In September 2015, the Debtors filed the Plan of Reorganization and the Disclosure Statement. The Disclosure Statement was approved by the Bankruptcy Court in September 2015. In October 2015, the Debtors filed a plan supplement to the Plan of Reorganization that provides greater detail about the Plan of Reorganization and the Debtors post-emergence structure (the Plan Supplement).

Following the approval of the Disclosure Statement by the Bankruptcy Court, the Debtors solicited the vote of their required creditors for approval of the Plan of Reorganization. In October 2015, the required creditors voted to approve the Plan of Reorganization. The Bankruptcy Court hearing to review the Plan of Reorganization for confirmation is scheduled to begin on November 3, 2015. The Debtors cannot predict the outcome of the confirmation hearing. See Note 2 for further discussion regarding the Chapter 11 Cases and the Plan of Reorganization and the Disclosure Statement.

Basis of Presentation, Including Application of Bankruptcy Accounting

The condensed consolidated financial statements have been prepared in accordance with US GAAP. The condensed consolidated financial statements have been prepared as if EFCH is a going concern and contemplate the realization of assets and liabilities in the normal course of business. The condensed consolidated financial statements reflect the application of Financial Accounting Standards Board Accounting Standards Codification (ASC) 852, Reorganizations. During the pendency of the Chapter 11 Cases, the Debtors will operate their businesses as debtors-in-possession under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. ASC 852 applies to entities that have filed a petition for bankruptcy under Chapter 11 of the Bankruptcy Code. The guidance requires that transactions and events directly associated with the reorganization be distinguished from the ongoing operations of the business. In addition, the guidance provides for changes in the accounting and presentation of liabilities. See Notes 7 and 9 for discussion of these accounting and reporting changes.

Adjustments (consisting of normal recurring accruals) necessary for a fair presentation of the results of operations and financial position have been included therein. All intercompany items and transactions have been eliminated in consolidation. Certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with US GAAP have been omitted pursuant to the rules and regulations of the SEC. Because the condensed consolidated interim financial statements do not include all of the information and footnotes required by US GAAP, they should be read in conjunction with the audited financial statements and related notes included in our 2014 Form 10-K. The results of operations for an interim period may not give a true indication of results for a full year. All dollar amounts in the financial statements and tables in the notes are stated in millions of US dollars unless otherwise indicated.

A variable interest entity (VIE) is an entity with which we have a relationship or arrangement that indicates some level of control over the entity or results in economic risks to us. Accounting standards require consolidation of a VIE if we have (a) the power to direct the significant activities of the VIE and (b) the right or obligation to absorb profit and loss from the VIE (i.e., we are the primary beneficiary of the VIE). Prior to the fourth quarter of 2014, we consolidated as a VIE Comanche Peak Nuclear Power Company LLC (CPNPC), a joint venture formed by subsidiaries of TCEH and Mitsubishi Heavy Industries Ltd. (MHI) for the purpose of developing two new nuclear generation units at our existing Comanche Peak nuclear fueled generation facility. In the fourth quarter of 2014, the MHI subsidiary withdrew from the joint venture. As a result, the TCEH subsidiary owns 100% of CPNPC, CPNPC no longer qualifies as a VIE and CPNPC is now consolidated as a wholly owned subsidiary. Activity related to the VIE in the nine months ended September 30, 2014 was immaterial. There are no material investments accounted for under the equity or cost method.

Use of Estimates

Preparation of financial statements requires estimates and assumptions about future events that affect the reporting of assets and liabilities at the balance sheet dates and the reported amounts of revenue and expense, including fair value measurements and estimates of expected allowed claims. In the event estimates and/or assumptions prove to be different from actual amounts, adjustments are made in subsequent periods to reflect more current information.

Changes in Accounting Standards

In April 2014, the FASB issued Accounting Standards Update No. 2014-08 (ASU 2014-08), Presentation of Financial Statements (Topic 205) and Property Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the requirements for reporting discontinued operations. The ASU states that a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has or will have a major effect on an entity's operations and financial results when the component of an entity or group of components of an entity meets the criteria to be classified as held for sale, is disposed of by sale, or is disposed of other than by sale. The amendments in this ASU also require additional disclosures about discontinued operations. ASU 2014-08 is effective for the Company for the first quarter of 2015. This new requirement is relevant to our presentation of TCEH. Based on our analysis, ASU 2014-08 will not materially affect our results of operations, financial position, or cash flows, unless a spin-off of TCEH is approved by the Bankruptcy Court (see Note 2), at which time presentation as discontinued operations may be appropriate.

In April 2015, the FASB issued Accounting Standards Update 2015-03 (ASU 2015-03), Simplifying Balance Sheet Presentation by Presenting Debt Issuance Costs as a Deduction from Recognized Debt Liability. The ASU is effective for annual reporting periods, including interim reporting periods within those periods, beginning after December 15, 2015. Early adoption is permitted. The new standard requires debt issuance costs to be classified as reductions to the face value of the related debt. We do not expect ASU 2015-03 to materially affect our financial position until we issue new debt. During the Chapter 11 Cases, debt issuance costs on prepetition debt subject to compromise will continue to be reported in liabilities subject to compromise. In August 2015, the FASB issued Accounting Standards Update 2015-15 (ASU 2015-15), Interest-Imputation of Interest (Topic 835-30) Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line of Credit Arrangements. ASU 2015-15 provides guidance on the presentation of debt issuance costs associated with line-of-credit arrangements. Given the absence of authoritative guidance within ASU 2015-03 for debt issuance costs related to line-of-credit arrangements, ASU 2015-15 allows an entity to defer and present debt issuance costs as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the line-of-credit.

In May 2015, the FASB issued Accounting Standards Update 2015-07 (ASU 2015-07), Disclosures for Investments in Certain Entities that Calculate Net Asset Value Per Share (or its Equivalent). The ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2015, with retrospective application to all periods presented. Early adoption is permitted. ASU 2015-07 removes the requirement to categorize within the fair value hierarchy investments for which fair values are estimated using the net asset value practical expedient provided by Accounting Standards Codification 820, Fair Value Measurement. Disclosures about investments in certain entities that calculate net asset value per share are limited under ASU 2015-07 to those investments for which the entity has elected to estimate the fair value using the net asset value practical expedient. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

In August 2015, the FASB issued Accounting Standards Update 2015-13, Derivatives and Hedging (Topic 815), Application of the Normal Purchases and Normal Sales Scope Exception to Certain Electricity Contracts within Nodal Energy Markets. The ASU clarified that the use of locational marginal pricing by an independent system operator does not constitute net settlement of a contract for the purchase or sale of electricity if all the criterion of the normal purchase and normal sale scope exception are met, including physical delivery. The ASU was effective upon issuance and did not impact our financial statements.