Energy Future Intermediate Holding 10-Q 4 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 04, 2014
Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'Energy Future Intermediate Holding CO LLC	'
Entity Central Index Key	'0001445146	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	0
Entity Outstanding Membership Interests	'At November 4, 2014, the outstanding membership interest in Energy Future Intermediate Holding Company LLC was directly held by Energy Future Holdings Corp.	'

Condensed_Statements_Of_Consol

Condensed Statements Of Consolidated Income (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Selling, General and Administrative Expense	($2)	($5)	($21)	($5)
Other deductions (Note 4)	-12	0	-211	0
Interest income — affiliates (Note 10)	0	0	0	284
Interest expense and related charges (Note 8)	-58	-191	-381	-566
Reorganization Items	-7	0	-235	0
Loss before income taxes and equity in earnings of unconsolidated subsidiary	-79	-196	-848	-287
Income tax benefit	25	68	215	100
Equity in earnings of unconsolidated subsidiary (net of tax) (Note 3)	123	114	276	255
Net income (loss)	$69	($14)	($357)	$68

Condensed_Statements_Of_Consol1

Condensed Statements Of Consolidated Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income (loss)	$69	($14)	($357)	$68
Other comprehensive income (loss) — net of tax effects:	'	'	'	'
Recognition in interest income of mark-to-market valuations of investments in affiliate debt upon distribution to EFH Corp.	0	0	0	-185
Net effects related to Oncor — reported in equity in earnings of unconsolidated subsidiaries (net of tax)	-1	1	0	1
Total amount reclassified from accumulated other comprehensive income (loss) during the period	-1	1	0	-184
Comprehensive income (loss)	$68	($13)	($357)	($116)

Condensed_Statements_Of_Consol2

Condensed Statements Of Consolidated Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Reclassification to interest income of mark-to-market valuations of holdings of affiliate debt (net of tax expense of $—, $—, $— and $99) (Note 10)	$0	$0	$0	$99
Net effects related to Oncor — reported in equity in earnings of unconsolidated subsidiaries (net of tax benefit of $— in all periods)	$0	$0	$0	$0

Condensed_Statements_Of_Consol3

Condensed Statements Of Consolidated Cash Flows (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows — operating activities:	'	'
Net income (loss)	($357)	$68
Adjustments to reconcile net income to cash used in operating activities:	'	'
Equity in earnings of unconsolidated subsidiary	-276	-255
Distributions of earnings from unconsolidated subsidiary	128	148
Deferred income taxes, net	-20	-96
Fees paid for EFIH DIP Facility (Notes 5 and 6) (reported as financing activities)	93	0
Interest expense related to pushed-down debt of parent (Notes 7 and 8)	1	5
Interest expense on toggle notes payable in additional principal (Notes 7 and 8)	65	130
Reserve recorded for income tax receivable from EFH Corp. (Note 4)	211	0
Loss on exchange and settlement of EFIH First Lien Notes (Notes 5 and 6)	108	0
Amortization of debt related balances (Note 8)	-17	-39
Mark-to-market gain reclassified from accumulated other comprehensive income (Note 10)	0	-284
Changes in operating assets and liabilities:	'	'
Income taxes receivable from/payable to EFH Corp. (Note 11)	0	-6
Accrued interest	15	38
Other changes in operating assets and liabilities	-188	-6
Cash used in operating activities	-237	-297
Cash flows — financing activities:	'	'
Proceeds from EFIH DIP Facility before fees paid (Notes 5 and 6)	3,564	0
Fees paid for EFIH DIP Facility (Note 5)	-93	0
Repayments/repurchases of debt (Note 5)	-2,312	0
Interest received on holdings of affiliate debt (Note 10)	0	208
Distributions to EFH Corp. (Note 10)	0	-680
Debt exchange and issuance costs, premiums and discounts	0	-6
Cash provided by (used in) financing activities	1,159	-478
Cash flows — investing activities:	'	'
Restricted cash related to debt issuance	0	680
Cash provided by investing activities	0	680
Net change in cash and cash equivalents	922	-95
Cash and cash equivalents — beginning balance	242	424
Cash and cash equivalents — ending balance	$1,164	$329

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$1,164	$242
Other current assets	3	2
Total current assets	1,167	244
Investment in Oncor Holdings (Note 3)	6,098	5,950
Other noncurrent assets	0	58
Total assets	7,265	6,252
Current liabilities:	'	'
Trade accounts and other payables to affiliates	2	10
Notes, loans and other debt (Note 7)	0	7,877
Accumulated deferred income taxes	26	26
Accrued interest	1	137
Other current liabilities	11	0
Total current liabilities	40	8,050
Borrowings under debtor-in-possession credit facilities (Note 5)	5,400	0
Liabilities subject to compromise (Note 7)	3,984	0
Accumulated deferred income taxes	4	24
Total liabilities	9,428	8,074
Commitments and Contingencies (Note 9)	'	'
Membership interests (Note 10):	'	'
Capital account	-1,489	-1,148
Affiliate debt held by EFIH (Note 10)	-635	-635
Accumulated other comprehensive income (loss)	-39	-39
Total membership interests	-2,163	-1,822
Total liabilities and membership interests	$7,265	$6,252

Business_And_Significant_Accou

Business And Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Business And Significant Accounting Policies	'
	BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES
	Description of Business
	References in this report to "the company" are to EFIH and/or its direct and indirect subsidiaries, as apparent in the context. See "Glossary" for defined terms.
	EFIH, a direct, wholly owned subsidiary of EFH Corp., is a Dallas, Texas-based holding company with no operations or operating assets whose wholly owned subsidiary, Oncor Holdings, holds a majority interest (approximately 80%) in Oncor. Oncor is a regulated electricity transmission and distribution company principally engaged in providing delivery services to REPs, including subsidiaries of TCEH, that sell electricity to residential, business and other consumers in Texas. EFIH has no reportable business segments. Oncor Holdings and its subsidiaries (the Oncor Ring-Fenced Entities) are not consolidated in EFIH's financial statements in accordance with consolidation accounting standards related to variable interest entities (VIEs) (see Note 3).
	Various "ring-fencing" measures have been taken to enhance the credit quality of Oncor Holdings and Oncor. These measures serve to mitigate Oncor's and Oncor Holdings' credit exposure to the Texas Holdings Group, which includes EFIH, and to reduce the risk that the assets and liabilities of the Oncor Ring-Fenced Entities would be substantively consolidated with the assets and liabilities of the Texas Holdings Group in the event of a bankruptcy of one or more of Texas Holding Group's subsidiaries. Such measures include, among other things: Oncor's sale of a 19.75% equity interest to Texas Transmission Investment LLC (a limited liability company that owns a 19.75% equity interest in Oncor and is not affiliated with EFH Corp., any of EFH Corp.'s subsidiaries or any member of the Sponsor Group) in November 2008; maintenance of separate books and records for the Oncor Ring-Fenced Entities; the board of directors of Oncor Holdings and Oncor being comprised of a majority of independent directors, and prohibitions on the Oncor Ring-Fenced Entities providing credit support to, or receiving credit support from, any member of the Texas Holdings Group. The assets and liabilities of the Oncor Ring-Fenced Entities are separate and distinct from those of the Texas Holdings Group, including TXU Energy and Luminant, and none of the assets of the Oncor Ring-Fenced Entities are available to satisfy the debt or contractual obligations of any member of the Texas Holdings Group. Oncor and Oncor Holdings do not bear any liability for debt or contractual obligations of the Texas Holdings Group (including, but not limited to, EFIH's debt obligations), and vice versa. Accordingly, Oncor Holdings' operations are conducted, and its cash flows managed, independently from the Texas Holdings Group.
	Bankruptcy Filing
	As discussed further in Note 2, 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, (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). See Note 5 for discussion of debtor-in-possession financing.
	Basis of Presentation, Including Application of Bankruptcy Accounting
	The condensed consolidated financial statements have been prepared as if EFIH is a going concern and reflect the application of ASC 852-10, Reorganizations. During the pendency of the Bankruptcy Filing, 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 852-10 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, as well as expenses and income directly associated with the Chapter 11 Cases. See Notes 6 and 7 for discussion of these accounting and reporting changes.
	Investments in unconsolidated subsidiaries, which are 50% or less owned and/or do not meet accounting standards criteria for consolidation, are accounted for under the equity method (see Note 3). 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 EFIH's 2013 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.
	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 income 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 August 2014, the FASB issued Accounting Standards Update No. 2014-15 (ASU 2014-15), Presentation of Financial Statements - Going Concern. ASU 2014-15 is effective for annual reporting periods (including interim periods within those periods) ending after December 15, 2016. Early application is permitted. The amendments in ASU 2014-15 create a new ASC Sub-topic 205-40, Presentation of Financial Statements - Going Concern and requires management to assess for each annual and interim reporting period if conditions exist that raise substantial doubt about an entity’s ability to continue as a going concern. The rule requires various disclosures depending on the facts and circumstances surrounding an entity's ability to continue as a going concern. EFIH is in the process of assessing the effects of the application of the new guidance on its financial statements.

Bankruptcy_Filing

Bankruptcy Filing	9 Months Ended
	Sep. 30, 2014
Reorganizations [Abstract]	'
Bankruptcy Filing	'
	BANKRUPTCY FILING
	On 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, filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the District of Delaware. During the pendency of the Bankruptcy Filing (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.
	The Bankruptcy Filing resulted primarily from the adverse effects on EFH Corp.'s competitive businesses of lower wholesale electricity prices in ERCOT driven by the sustained decline in natural gas prices since mid-2008. Further, the natural gas hedges that TCEH entered into when forward market prices of natural gas were significantly higher than current prices had largely matured before the remaining positions were terminated shortly after the Bankruptcy Filing. These market conditions challenged the profitability and operating cash flows of EFH Corp.'s competitive businesses and resulted in the inability to support their significant interest payments and debt maturities, including the remaining debt obligations due in 2014, and the inability to refinance and/or extend the maturities of their outstanding debt.
	As previously disclosed, after a series of discussions with certain creditors that began in 2013 and in anticipation of the Bankruptcy Filing, on April 29, 2014, the Debtors entered into a Restructuring Support and Lock-Up Agreement (RSA) with various stakeholders (Consenting Parties) in order to effect an agreed upon restructuring of the Debtors through a pre-arranged Chapter 11 plan of reorganization.
	On July 24, 2014, pursuant to the RSA, each of EFH Corp., EFIH, EFCH, TCEH, EFIH Finance, Inc. and TCEH Finance, Inc. provided a notice of termination of the RSA in accordance with its terms to the Consenting Parties. The RSA termination became effective on July 31, 2014.
	In cooperation with various stakeholders, the Debtors are focused on formulating and implementing an effective and efficient plan of reorganization for each of the Debtors under Chapter 11 of the Bankruptcy Code that maximizes enterprise value.
	Proposed Sale of Economic Interest in Oncor
	In September 2014, with input and support from several key stakeholders, the Debtors filed a motion with the Bankruptcy Court seeking the entry of an order approving bidding procedures with respect to the potential sale of EFH Corp.'s/EFIH's economic interest in Oncor. During October 2014, the bankruptcy court held hearings regarding the motion. On November 3, 2014, the Bankruptcy Court conditionally approved the motion. In conditionally approving the motion, the Bankruptcy Court required that, among other things, the Debtors modify the proposed bidding procedures and order to (a) allow up to five advisors for each of the official unsecured creditor committees at TCEH and EFH Corp./EFIH to access information regarding the bidding process on terms to be negotiated with these advisors, (b) allow additional time for bidders to evaluate potential transactions and submit bids and (c) prohibit material modifications to the bid procedures without the consent of the committees or further order of the Bankruptcy Court. In addition, the Bankruptcy Court required that prior to a modified order becoming effective, the respective boards of directors of EFH Corp., EFCH, TCEH and EFIH must vote to approve the proposed modified bidding procedures (along with an affirmative vote of the respective disinterested directors at EFIH and TCEH). The Debtors intend to continue to work closely with each of their respective stakeholders to formulate a bidding process that will maximize enterprise value for each of the Debtors.
	Tax Matters
	In June 2014, EFH Corp. filed a request with the IRS for a private letter ruling (Private Letter Ruling) that, among other things, will provide (a) that (i) the transfer by TCEH of all of its assets and its ordinary course operating liabilities to reorganized TCEH consummated through a tax-free spin (in accordance with the Private Letter Ruling) in connection with TCEH's emergence from bankruptcy (Reorganized TCEH), (ii) the transfer by the Debtors to Reorganized TCEH of certain operating assets and liabilities that are reasonably necessary to the operation of Reorganized TCEH and (iii) the distribution by TCEH of (A) the equity it holds in Reorganized TCEH and (B) the cash proceeds TCEH receives from Reorganized TCEH to the holders of TCEH first lien claims, will qualify as a "reorganization" within the meaning of Sections 368(a)(1)(G), 355 and 356 of the Code and (b) for certain other rulings under Sections 368(a)(1)(G) and 355 of the Code. The Debtors intend to continue to pursue the Private Letter Ruling in connection with any Chapter 11 plan of reorganization that is ultimately proposed. In October 2014, the Debtors filed a memorandum with the Bankruptcy Court that described tax related matters regarding restructuring alternatives.
	Operation and Implications of the Chapter 11 Cases
	The accompanying consolidated financial statements contemplate the realization of assets and the satisfaction of liabilities in the normal course of business. The Debtors' ability to continue as a going concern is contingent upon their ability to comply with the financial and other covenants contained in the debtor-in-possession financing (DIP Facilities, described in Note 5), the Bankruptcy Court's approval of the Chapter 11 plan of reorganization ultimately proposed by the Debtors and their ability to successfully implement such Chapter 11 plan and obtain new financing, among other factors. As a result of the Chapter 11 Cases, the realization of assets and the satisfaction of liabilities are subject to uncertainty. While operating as debtors-in-possession under Chapter 11, the Debtors may sell or otherwise dispose of or liquidate assets or settle liabilities, subject to the approval of the Bankruptcy Court or as otherwise permitted in the ordinary course of business (and subject to restrictions contained in the DIP Facilities), for amounts other than those reflected in the accompanying consolidated financial statements.
	In general, the Debtors have received final bankruptcy court orders with respect to "first day motions" and other "operating motions" that allow the Debtors to operate their businesses in the ordinary course, including, among others, providing for the payment of certain pre-petition employee and retiree expenses and benefits, the use of the Debtors' existing cash management system, the continuation of customer contracts and programs at its retail electricity operations, the payment of certain pre-petition amounts to certain critical vendors, the ability to perform under certain pre-petition hedging and trading arrangements and the ability to pay certain pre-petition taxes and regulatory fees. In addition, the Bankruptcy Court has issued orders approving the DIP Facilities discussed in Note 5.
	Pre-Petition Claims
	Holders of pre-petition claims will be required to file proofs of claims by the "bar date" established by the Bankruptcy Court. A bar date is the date by which certain claims against the Debtors must be filed if the claimants wish to receive any distribution in the Chapter 11 Cases. In August 2014, the Bankruptcy Court established a bar date of October 27, 2014 for most claims. The Debtors have received numerous proofs of claim since the Petition Date. The Debtors are early in the process of reconciling those claims to the amounts listed in its schedules of assets and liabilities. The Debtors may ask the Bankruptcy Court to disallow claims that it believes are duplicative, have been later amended or superseded, are without merit, are overstated or should be disallowed for other reasons. Given the substantial number of claims filed, the claims resolution process will take considerable time to complete. Differences between liability amounts recorded by the company as liabilities subject to compromise and claims filed by creditors will be investigated and, if necessary, the Bankruptcy Court will make a final determination of the allowable claim. Differences between those final allowed claims and the liabilities recorded in the condensed consolidated balance sheet will be recognized as reorganization items in the Debtors' condensed statement of consolidated income (loss) as they are resolved. The determination of how liabilities will ultimately be resolved cannot be made until the Bankruptcy Court approves a plan of reorganization or approves orders related to settlement of specific liabilities. Accordingly, the ultimate amount or resolution of such liabilities is not determinable at this time. The resolution of such claims could result in material adjustments to the company's financial statements.

Investment_In_Oncor_Holdings

Investment In Oncor Holdings	9 Months Ended
	Sep. 30, 2014
Investment In Oncor Holdings [Abstract]	'
Investment In Oncor Holdings	'
	INVESTMENT IN ONCOR HOLDINGS
	EFIH has a wholly owned subsidiary, Oncor Holdings, which holds an approximate 80% equity interest in Oncor. Oncor Holdings is considered a variable interest entity (VIE). A VIE is an entity with which EFIH has a relationship or arrangement that indicates some level of control over the entity or results in economic risks to it. Accounting standards require consolidation of a VIE if EFIH has (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., EFIH is the primary beneficiary of the VIE). In determining the appropriateness of consolidation of a VIE, EFIH evaluates its purpose, governance structure, decision making processes and risks that are passed on to its interest holders. EFIH also examines the nature of any related party relationships among the interest holders of the VIE and the nature of any special rights granted to the interest holders of the VIE.
	EFIH does not consolidate Oncor Holdings and instead accounts for it as an equity method investment because the structural and operational "ring-fencing" measures discussed in Note 1 prevent it from having power to direct the significant activities of Oncor Holdings or Oncor. In accordance with accounting standards, EFIH accounts for its investment in Oncor Holdings under the equity method, as opposed to the cost method, based on its level of influence over its activities.
	The carrying value of EFIH's variable interest in Oncor Holdings totaled $6.098 billion and $5.950 billion at September 30, 2014 and December 31, 2013, respectively, and is reported as investment in Oncor Holdings in EFIH's condensed consolidated balance sheets. EFIH's maximum exposure to loss from this investment does not exceed its carrying value.
	See Note 11 for discussion of Oncor Holdings' and Oncor's transactions with EFH Corp. and its other subsidiaries.
	Distributions from Oncor Holdings and Related Considerations — Oncor Holdings' distributions of earnings to EFIH totaled $128 million and $148 million for the nine months ended September 30, 2014 and 2013, respectively. Distributions may not be paid except to the extent Oncor maintains a required regulatory capital structure as discussed below. At September 30, 2014, $193 million was eligible to be distributed to Oncor's members after taking into account the regulatory capital structure limit, of which approximately 80% relates to EFIH's ownership interest in Oncor. The boards of directors of each of Oncor and Oncor Holdings can withhold distributions to the extent the applicable board determines in good faith that it is necessary to retain such amounts to meet expected future requirements of Oncor and/or Oncor Holdings.
	Oncor's distributions are limited by its regulatory capital structure, which is required to be at or below the assumed debt-to-equity ratio established periodically by the PUCT for ratemaking purposes, which is currently set at 60% debt to 40% equity. At September 30, 2014, Oncor's regulatory capitalization ratio was 58.7% debt and 41.3% equity. For purposes of this ratio, debt is calculated as long-term debt plus unamortized gains on reacquired debt less unamortized issuance expenses, premiums and losses on reacquired debt. The debt calculation excludes bonds issued by Oncor Electric Delivery Transition Bond Company LLC, which were issued in 2003 and 2004 to recover specific generation-related regulatory assets and other qualified costs. Equity is calculated as membership interests determined in accordance with US GAAP, excluding the effects of accounting for the Merger (which included recording the initial goodwill and fair value adjustments and the subsequent related impairments and amortization).
	As a result of the Bankruptcy Filing, Oncor had credit risk exposure to trade accounts receivable from subsidiaries of TCEH, which related to delivery services provided by Oncor to TCEH's retail electricity operations. At the Petition Date, these accounts receivable totaled $109 million. In June 2014, the Bankruptcy Court authorized the Debtors to pay all pre-petition delivery charges due Oncor, and such amounts were paid in full.
	Oncor Holdings Financial Statements — Condensed statements of consolidated income of Oncor Holdings and its subsidiaries for the three and nine months ended September 30, 2014 and 2013 are presented below:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Operating revenues	$	1,054		$	966		$	2,883		$	2,640
	Operation and maintenance expenses	(376		)	(315		)	(1,074		)	(919		)
	Depreciation and amortization	(218		)	(207		)	(638		)	(608		)
	Taxes other than income taxes	(115		)	(112		)	(330		)	(315		)
	Other income	3			4			10			14
	Other deductions	(4		)	(2		)	(11		)	(11		)
	Interest income	1			—			3			2
	Interest expense and related charges	(89		)	(94		)	(266		)	(283		)
	Income before income taxes	256			240			577			520
	Income tax expense	(101		)	(97		)	(230		)	(199		)
	Net income	155			143			347			321
	Net income attributable to noncontrolling interests	(32		)	(29		)	(71		)	(66		)
	Net income attributable to Oncor Holdings	$	123		$	114		$	276		$	255
	Assets and liabilities of Oncor Holdings at September 30, 2014 and December 31, 2013 are presented below:
		September 30,			December 31,
		2014			2013
	ASSETS
	Current assets:
	Cash and cash equivalents	$	17		$	28
	Restricted cash	67			52
	Trade accounts receivable — net	469			385
	Trade accounts and other receivables from affiliates	152			135
	Income taxes receivable from EFH Corp.	—			16
	Inventories	76			65
	Accumulated deferred income taxes	11			32
	Prepayments and other current assets	89			82
	Total current assets	881			795
	Restricted cash	16			16
	Other investments	96			91
	Property, plant and equipment — net	12,270			11,902
	Goodwill	4,064			4,064
	Regulatory assets — net	1,111			1,324
	Other noncurrent assets	69			71
	Total assets	$	18,507		$	18,263
	LIABILITIES
	Current liabilities:
	Short-term borrowings	$	720		$	745
	Long-term debt due currently	636			131
	Trade accounts payable — nonaffiliates	133			178
	Income taxes payable to EFH Corp.	56			23
	Accrued taxes other than income	145			169
	Accrued interest	65			95
	Other current liabilities	150			135
	Total current liabilities	1,905			1,476
	Accumulated deferred income taxes	1,839			1,905
	Long-term debt, less amounts due currently	5,041			5,381
	Other noncurrent liabilities and deferred credits	1,837			1,822
	Total liabilities	$	10,622		$	10,584

Other_Deductions

Other Deductions	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Other Deductions	'
	OTHER DEDUCTIONS
	EFIH has income tax receivables from EFH Corp. that arose under the Federal and State Income Tax Allocation Agreement. In consideration of the Bankruptcy Filing, EFIH fully reserved the income tax receivables because of the significant uncertainty regarding their ultimate settlement, resulting in charges of $12 million and $211 million in the three and nine months ended September 30, 2014, respectively.
	Further, at December 31, 2013, EFIH had an income tax receivable from EFH Corp. totaling $110 million. In the fourth quarter 2013, EFIH fully reserved the income tax receivable because of the significant uncertainty regarding its ultimate settlement.

DebtorinPossession_Borrowings_

Debtor-in-Possession Borrowings Facilities	9 Months Ended
	Sep. 30, 2014
Debtor-In-Possession Borrowings [Abstract]	'
Debtor-in-Possession Borrowings Facilities	'
	DEBTOR-IN-POSSESSION BORROWING FACILITIES
	EFIH DIP Facility and EFIH First Lien Notes Settlement — The EFIH DIP Facility provides for a $5.4 billion first-lien debtor-in-possession financing facility, all of which was utilized as of September 30, 2014 as follows:
	•	$1.836 billion of loans issued under the facility were issued as an exchange to holders of $1.673 billion principal amount of EFIH First Lien Notes plus accrued and unpaid interest totaling $78 million. Holders of substantially all of the principal amount exchanged received as payment in full a principal amount of loans under the EFIH DIP Facility equal to 105% of the principal amount of the notes held plus 101% of the accrued and unpaid interest at the non-default rate on such principal;
	•	$2.438 billion of cash borrowings were used to repay all remaining $2.312 billion principal amount of EFIH First Lien Notes (plus accrued and unpaid interest totaling $128 million), and
	•	Remaining borrowings under the facility, net of fees, of $1.038 billion are held as cash and cash equivalents.
	The exchange and settlement of the EFIH First Lien Notes resulted in a loss of $108 million, reported in reorganization items, which represents the excess of the principal amounts of debt issued, cash repayments and deferred financing costs associated with the exchanged and settled debt over the carrying value of the exchanged and settled debt and related accrued interest.
	The principal amounts outstanding under the EFIH DIP Facility bear interest based on applicable LIBOR rates, subject to a 1% floor, plus 3.25%. At September 30, 2014, outstanding borrowings under the EFIH DIP Facility totaled $5.4 billion at an annual interest rate of 4.25%. The timing of interest payments on the EFIH DIP Facility is flexible and can be paid on a one week or a one, two, three or six month basis or as otherwise agreed upon with the relevant lenders. The EFIH DIP Facility is a non-amortizing loan that may, subject to certain limitations, be voluntarily prepaid by the EFIH Debtors, in whole or in part, without any premium or penalty.
	The EFIH DIP Facility will mature on the earlier of (a) the effective date of any reorganization plan, (b) upon the sale of substantially all of EFIH's assets or (c) June 2016. The maturity date may be extended to no later than December 2016 subject to the satisfaction of certain conditions, including the payment of a 25 basis point extension fee, a requirement that an acceptable plan of reorganization has been filed on or prior to such extension and the availability of certain metrics of liquidity applicable to EFIH and EFIH Finance.
	EFIH's obligations under the EFIH DIP Facility are secured by a first lien covering substantially all of EFIH's assets, rights and properties, subject to certain exceptions set forth in the EFIH DIP Facility. The EFIH DIP Facility provides that all obligations thereunder constitute administrative expenses in the Chapter 11 Cases, with administrative priority and senior secured status under the Bankruptcy Code and, subject to certain exceptions set forth in the EFIH DIP Facility, will have priority over any and all administrative expense claims, unsecured claims and costs and expenses in the Chapter 11 Cases.
	The EFIH DIP Facility provides for affirmative and negative covenants applicable to EFIH and EFIH Finance, including affirmative covenants requiring EFIH and EFIH Finance to provide financial information, budgets and other information to the agents under the EFIH DIP Facility, and negative covenants restricting EFIH's and EFIH Finance's ability to incur additional indebtedness, grant liens, dispose of assets, pay dividends or take certain other actions, in each case except as permitted in the EFIH DIP Facility. The EFIH DIP Facility also includes a minimum liquidity covenant pursuant to which EFIH cannot allow the amount of its unrestricted cash (as defined in the EFIH DIP Facility) to be less than $150 million. The Oncor Ring-Fenced Entities are not restricted subsidiaries for purposes of the EFIH DIP Facility.
	The EFIH DIP Facility provides for certain customary events of default, including events of default resulting from non-payment of principal, interest or other amounts when due, material breaches of representations and warranties, material breaches of covenants in the EFIH DIP Facility or ancillary loan documents, cross-defaults under other agreements or instruments and the entry of material judgments against EFIH. Upon the existence of an event of default, the EFIH DIP Facility provides that all principal, interest and other amounts due thereunder will become immediately due and payable, either automatically or at the election of specified lenders.
	The EFIH DIP Facility permits, subject to certain terms, conditions and limitations set forth in the EFIH DIP Facility, EFIH to incur incremental junior lien subordinated debt in an aggregate amount not to exceed $3 billion

Reorganization_Items

Reorganization Items	9 Months Ended
	Sep. 30, 2014
Reorganization Items [Abstract]	'
Reorganization Items	'
	REORGANIZATION ITEMS
	Expenses and income directly associated with the Chapter 11 Cases are reported separately in the condensed statements of consolidated income (loss) as reorganization items as required by ASC 852-10, Reorganizations. Reorganization items also include adjustments to reflect the carrying value of liabilities subject to compromise (LSTC) at their estimated allowed claim amounts, as such adjustments are determined. The following table presents reorganization items incurred since the Petition Date as reported in the condensed statements of consolidated income (loss):
		Three Months Ended		Post-Petition Period Through
		30-Sep-14		30-Sep-14
	Loss on exchange and settlement of EFIH First Lien Notes (Note 5)	$	—	$	108
	Fees associated with completion of EFIH DIP Facility	—		93
	Expenses related to legal advisory and representation services	5		22
	Expenses related to other professional consulting and advisory services	2		12
	Total reorganization items	$	7	$	235

Liabilities_Subject_to_Comprom

Liabilities Subject to Compromise	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Liabilities Subject to Compromise	'
	LIABILITIES SUBJECT TO COMPROMISE
	The amounts classified as liabilities subject to compromise (LSTC) reflect the company's estimate of pre-petition liabilities to be addressed in the Chapter 11 Cases and may be subject to future adjustment as the Chapter 11 Cases proceed. Debt amounts include related unamortized deferred financing costs, discounts or premiums. Amounts classified to LSTC do not include pre-petition liabilities that are fully secured by letters of credit or cash deposits. The following table presents LSTC as reported in the condensed consolidated balance sheets at September 30, 2014:
		September 30,
		2014
	Notes, loans and other debt per the following table	$	3,843
	Accrued interest on notes, loans and other debt	137
	Advances and other payables to affiliates	4
	Total liabilities subject to compromise	$	3,984
	Pre-Petition Notes, Loans and Other Debt Reported as Liabilities Subject to Compromise
	All amounts of pre-petition notes, loans and other debt reported as liabilities subject to compromise represent principal amounts.
		September 30,			31-Dec-13
		2014
	Debt issued by EFIH:
	6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 (a)	$	—		$	503
	10% Fixed Senior Secured First Lien Notes due December 1, 2020 (a)	—			3,482
	11% Fixed Senior Secured Second Lien Notes due October 1, 2021	406			406
	11.75% Fixed Senior Secured Second Lien Notes due March 1, 2022	1,750			1,750
	11.25%/12.25% Senior Toggle Notes due December 1, 2018	1,566			1,566
	9.75% Fixed Senior Notes due October 15, 2019	2			2
	Unamortized premium	243			284
	Unamortized discount	(121		)	(146		)
	Total debt issued by EFIH	3,846			7,847
	Pushed down pre-petition debt (b):
	10.875% EFH Corp. Fixed Senior Notes due November 1, 2017	17			17
	11.25%/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017	13			13
	Total pushed down debt	30			30
	Deferred debt issuance and extension costs (c)	(33		)	—
	Total debt	$	3,843		$	7,877
	________________
	(a)	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).
	(b)	Represents 50% of the amount of these EFH Corp. securities guaranteed by EFIH and pushed down per the discussion below under "Guarantees and Push Down of EFH Corp. Pre-Petition Debt."
	(c)	Deferred debt issuance and extension costs were reported in other noncurrent assets at December 31, 2013.
	Guarantees and Push Down of EFH Corp. Pre-Petition Debt
	Merger-related debt of EFH Corp. and its subsidiaries consists of debt issued or existing at the time of the Merger. Debt issued in exchange for Merger-related debt is considered Merger-related. Debt issuances for cash are considered Merger-related debt to the extent the proceeds are used to repurchase Merger-related debt. EFCH and EFIH (excluding their subsidiaries) fully and unconditionally guarantee on a joint and several basis the Merger-related debt of EFH Corp. (parent). Such debt is subject to push down in accordance with SEC Staff Accounting Bulletin Topic 5-J, and as a result, a portion of such debt and related interest expense is reflected in EFIH's financial statements. Merger-related debt of EFH Corp. held by its subsidiaries is not subject to push down.
	Pre-petition debt guaranteed and subject to push down at September 30, 2014 totals $60 million and consists of $33 million principal amount of EFH Corp. 10.875% Notes and $27 million principal amount of EFH Corp. Toggle Notes. The amount reflected in EFIH's condensed consolidated balances sheets as pushed down pre-petition debt ($30 million at both September 30, 2014 and December 31, 2013, as shown in the debt table above) represents 50% of the principal amount of the EFH Corp. Merger-related debt guaranteed. This percentage reflects the fact that at the time of the Merger, the equity investments of EFCH and EFIH in their respective operating subsidiaries were essentially equal amounts. Because payment of principal and interest on the debt is the responsibility of EFH Corp., EFIH records the settlement of such amounts as noncash capital contributions from EFH Corp.
	There were no payments of interest by EFH Corp. on pre-petition debt pushed down for the nine months ended September 30, 2014. EFH Corp. payments of interest on debt pushed down totaled $21 million for the nine months ended September 30, 2013.
	Information Regarding Significant Pre-Petition Debt
	The EFIH pre-petition debt described below is junior in right of priority and payment to the EFIH DIP Facility.
	EFIH 6.875% Senior Secured First Lien Notes — There were no principal amounts of the EFIH 6.875% Notes outstanding at September 30, 2014 as the notes were exchanged or settled in June 2014 as discussed in Note 5. These notes bore interest at a fixed rate of 6.875% per annum. The EFIH 6.875% Notes were secured on a first-priority basis by EFIH's pledge of its 100% ownership of the membership interests in Oncor Holdings (the EFIH Collateral) on an equal and ratable basis with the EFIH 10% Notes (discussed below).
	The EFIH 6.875% Notes were senior obligations of EFIH and ranked equally in right of payment with all senior indebtedness of EFIH and were senior in right of payment to any future subordinated indebtedness of EFIH. The EFIH 6.875% Notes were effectively senior to all second lien and unsecured indebtedness of EFIH, to the extent of the value of the EFIH Collateral, and were effectively subordinated to any indebtedness of EFIH secured by assets of EFIH other than the EFIH Collateral, to the extent of the value of such assets. Furthermore, the EFIH 6.875% Notes were structurally subordinated to all indebtedness and other liabilities of EFIH's subsidiaries (other than EFIH Finance), including Oncor Holdings and its subsidiaries. The holders of the EFIH 6.875% Notes voted as a separate class from the holders of the EFIH 10% Notes.
	The EFIH 6.875% Notes were issued in private placements and are not registered under the Securities Act. EFIH had agreed to use its commercially reasonable efforts to register with the SEC notes having substantially identical terms as the EFIH 6.875% Notes (except for provisions relating to transfer restrictions and payment of additional interest) as part of an offer to exchange freely tradable notes for the EFIH 6.875% Notes. Because the exchange offer was not completed, the annual interest rate on the EFIH 6.875% Notes increased by 25 basis points (to 7.125%) on August 15, 2013 and by an additional 25 basis points (to 7.375%) on November 15, 2013.
	EFIH 10% Senior Secured First Lien Notes — There were no principal amounts of the EFIH 10% Notes outstanding at September 30, 2014 as the notes were exchanged or settled in June 2014 as discussed in Note 5. The notes bore interest at a fixed rate of 10% per annum. The notes were secured by the EFIH Collateral on an equal and ratable basis with the EFIH 6.875% Notes.
	The EFIH 10% Notes were senior obligations of EFIH and ranked equally in right of payment with all existing and future senior indebtedness of EFIH, including the EFIH 6.875% Notes. The EFIH 10% Notes had substantially the same terms as the EFIH 6.875% Notes. The holders of the EFIH 10% Notes voted as a separate class from the holders of the EFIH 6.875% Notes.
	The $1.302 billion of EFIH 10% Notes issued in January 2013 were issued in private placements and are not registered under the Securities Act. EFIH had agreed to use its commercially reasonable efforts to register with the SEC notes having substantially identical terms as the EFIH 10% Notes (except for provisions relating to transfer restrictions and payment of additional interest) as part of an offer to exchange freely tradable notes for the EFIH 10% Notes. Because the exchange offer was not completed, the annual interest rate on the EFIH 10% Notes increased by 25 basis points (to 10.25%) on January 30, 2014 and by an additional 25 basis points (to 10.50%) on April 30, 2014.
	EFIH 11% Senior Secured Second Lien Notes — The principal amount of the EFIH 11% Notes totals $406 million, with interest at a fixed rate of 11% per annum. The EFIH 11% Notes are secured on a second-priority basis by the EFIH Collateral on an equal and ratable basis with the EFIH 11.75% Notes.
	The EFIH 11% Notes are senior obligations of EFIH and EFIH Finance and rank equally in right of payment with all senior indebtedness of EFIH and are effectively senior in right of payment to all existing or future unsecured debt of EFIH to the extent of the value of the EFIH Collateral. The notes have substantially the same terms as the EFIH 11.75% Notes discussed below, and the holders of the EFIH 11% Notes will generally vote as a single class with the holders of the EFIH 11.75% Notes.
	EFIH 11.75% Senior Secured Second Lien Notes — The principal amount of the EFIH 11.75% Notes totals $1.750 billion, with interest at a fixed rate of 11.75% per annum. The EFIH 11.75% Notes are secured on a second-priority basis by the EFIH Collateral on an equal and ratable basis with the EFIH 11% Notes. The EFIH 11.75% Notes have substantially the same covenants as the EFIH 11% Notes, and the holders of the EFIH 11.75% Notes will generally vote as a single class with the holders of the EFIH 11% Notes.
	The EFIH 11.75% Notes were issued in private placements and are not registered under the Securities Act. EFIH had agreed to use its commercially reasonable efforts to register with the SEC notes having substantially identical terms as the EFIH 11.75% Notes (except for provisions relating to transfer restrictions and payment of additional interest) as part of an offer to exchange freely tradable notes for the EFIH 11.75% Notes. Because the exchange offer was not completed, the annual interest rate on the EFIH 11.75% Notes increased by 25 basis points (to 12.00%) on February 6, 2013 and by an additional 25 basis points (to 12.25%) on May 6, 2013.
	EFIH 11.25%/12.25% Senior Toggle Notes — The principal amount of the EFIH Toggle Notes totals $1.566 billion, with interest at a fixed rate of 11.25% per annum for cash interest and 12.25% per annum for PIK Interest . The terms of the Toggle Notes include an election by EFIH, for any interest period until June 1, 2016, to pay interest on the Toggle Notes (i) entirely in cash; (ii) by increasing the principal amount of the notes or by issuing new EFIH Toggle Notes (PIK Interest); or (iii) 50% in cash and 50% in PIK Interest. EFIH made its pre-petition interest payments on the EFIH Toggle Notes by using the PIK feature of those notes.
	The EFIH Toggle Notes were issued in private placements and are not registered under the Securities Act. EFIH had agreed to use its commercially reasonable efforts to register with the SEC notes having substantially identical terms as the EFIH Toggle Notes (except for provisions relating to transfer restrictions and payment of additional interest) as part of an offer to exchange freely tradable notes for the EFIH Toggle Notes. Because the exchange offer was not completed, the annual interest rate on the EFIH Toggle Notes increased by 25 basis points (to 11.50%) on December 6, 2013 and by an additional 25 basis points (to 11.75%) on March 6, 2014.
	Material Cross Default/Acceleration Provisions — Certain of EFIH's financing arrangements contain provisions that result in an event of default if there were a failure under other financing arrangements to meet payment terms or to observe other covenants that could or does result in an acceleration of payments due. Such provisions are referred to as "cross default" or "cross acceleration" provisions. The Bankruptcy Filing triggered defaults on EFIH's debt obligations, but pursuant to the Bankruptcy Code, creditors are stayed from taking any actions against the Debtors as a result of such defaults.

Interest_Expense_and_Related_C

Interest Expense and Related Charges	9 Months Ended
	Sep. 30, 2014
Interest Expense and Related Charges [Abstract]	'
Interest Expense and Related Charges	'
	INTEREST EXPENSE AND RELATED CHARGES
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014			2013
	Interest paid/accrued on debtor-in-possession financing	$	58	$	—		$	66		$	—
	Interest paid/accrued on pre-petition debt	—		160			266			470
	Interest expense related to pushed down debt	—		1			1			5
	Interest expense on pre-petition toggle notes payable in additional principal (Note 7)	—		45			65			130
	Amortization of debt exchange premiums	—		(20		)	(24		)	(62		)
	Amortization of debt exchange discounts and issuance costs	—		5			7			23
	Total interest expense and related charges	$	58	$	191		$	381		$	566
	Interest expense for the three and nine months ended September 30, 2014 reflects interest paid and accrued on debtor-in-possession financing (see Note 5).
	The Bankruptcy Code generally restricts payment of interest on pre-petition debt, subject to certain exceptions. However, the Bankruptcy Court ordered the payment of post-petition interest payments on EFIH First Lien Notes in connection with the settlement discussed in Note 5. Other than these amounts ordered by the Bankruptcy Court, effective April 29, 2014, EFIH discontinued recording interest expense on outstanding pre-petition debt classified as liabilities subject to compromise (LSTC). Interest expense as calculated under the contractual terms of EFIH's debt, all of which is subject to compromise, would have totaled $248 million for the post-petition period through September 30, 2014. This amount exceeded actual interest expense recorded, which represented $54 million in interest since the Bankruptcy Filing, by $194 million.

Commitments_And_Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments And Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	Guarantees
	See Notes 5 and 7 for discussion of EFIH's guarantees of certain debt.
	Legal Proceedings
	From time to time, EFIH may be involved in various legal and administrative proceedings in the normal course of business the ultimate resolutions of which, in the opinion of management, should not have a material effect upon its financial condition, results of operations or liquidity.
	Makewhole Claims — In May 2014, the indenture trustee for the EFIH 10% First Lien Notes initiated litigation in the Bankruptcy Court seeking, among other things, a declaratory judgment that EFIH is obligated to pay a redemption premium in connection with the cash repayment of the EFIH First Lien Notes as discussed in Note 5 and that such redemption premium is an allowed secured claim (EFIH First Lien Makewhole Claims). In the EFIH First Lien Makewhole Claims, the amount of such claims is alleged to be equal to approximately $432 million plus reimbursement of expenses. In June 2014, the indenture trustee for the EFIH Second Lien Notes initiated litigation in the Bankruptcy Court seeking similar relief with respect to the EFIH Second Lien Notes, including among other things, that EFIH is obligated to pay a redemption premium in connection with any repayment of the EFIH Second Lien Notes and that such redemption premium would be an allowed secured claim (the EFIH Second Lien Makewhole Claims and, together with the EFIH First Lien Makewhole Claims, the Makewhole Claims). In the EFIH Second Lien Makewhole Claims, as of September 30, 2014, the amount of such claims alleged would have been equal to approximately $652 million plus reimbursement of expenses. The EFIH Debtors expect to seek to obtain entry of orders from the Bankruptcy Court disallowing each of the Makewhole Claims provided the EFIH Debtors expect they will be required to pay accrued interest on the EFIH Second Lien Notes upon repayment of those notes.
	In addition, creditors may make additional claims in the Chapter 11 Cases for redemption premiums in connection with repayments or settlement of other pre-petition debt. There can be no assurance regarding the outcome of this litigation or the Bankruptcy Court's determination regarding the validity or the amounts payable in respect of each of the Makewhole Claims or other claims for redemption premiums.

Membership_Interests

Membership Interests	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Membership Interests	'
	MEMBERSHIP INTERESTS
	Cash Distributions
	No cash distributions were made in the nine months ended September 30, 2014. In January 2013, EFIH's board of directors declared, and EFIH paid, a cash distribution to EFH Corp. of $680 million, which was used by EFH Corp. to settle the TCEH Demand Notes (see Note 11).
	Distribution Restrictions
	The agreement governing the EFIH DIP Facility generally restricts EFIH's ability to make distributions or loans to any of its parent companies or their subsidiaries unless such distributions or loans are expressly permitted under the agreement governing such facility.
	Under applicable law, EFIH is prohibited from paying any distribution to the extent that immediately following payment of such distribution, it would be insolvent. In addition, due to the Bankruptcy Filing, no distributions are eligible to be paid without the approval of the Bankruptcy Court.
	Affiliate Debt Held by EFIH
	As a result of debt exchanges in 2009 through 2013, EFIH holds debt securities of EFH Corp. and TCEH. In December 2012, management determined that some or all of these securities may be returned as dividends to EFH Corp.; accordingly, the balances were reclassified at that time from investment in debt of affiliates and reported as a reduction of membership interests. Interest received reduces the carrying value of the securities and thus increases membership interests. There was no interest received in the nine months ended September 30, 2014. Interest received for the nine months ended September 30, 2013 totaled $208 million after-tax and represented accrued interest on notes distributed to EFH Corp. in the first quarter 2013. As a result of the Bankruptcy Filing, EFIH does not expect to receive further interest payments on affiliate debt securities it holds.
	In the first quarter 2013, EFIH distributed to EFH Corp. $6.360 billion principal amount of EFH Corp. debt held. As a result of this distribution, EFIH reclassified to interest income $284 million (pretax) of mark-to-market gains previously reported in accumulated other comprehensive income.
	The principal amounts, coupon rates, maturities and carrying value of debt of affiliates held at both September 30, 2014 and December 31, 2013 are as follows:
		Principal Amount			Carrying Value
	EFH Corp. 5.55% Fixed Senior Notes Series P due November 15, 2014	$	281		$	185
	EFH Corp. 6.50% Fixed Senior Notes Series Q due November 15, 2024	545			249
	EFH Corp. 6.55% Fixed Senior Notes Series R due November 15, 2034	456			194
	TCEH 10.25% Fixed Senior Notes due November 1, 2015 (both periods include $48 million principal amount of Series B Notes)	79			7
	Balance reported as reduction in membership interests	$	1,361		$	635
	The indentures governing the EFIH Notes do not limit EFIH's ability to distribute the EFH Corp. debt securities that it holds to EFH Corp. so long as it received such securities in exchange for the issuance of EFIH debt, which applies to all the EFH Corp. debt EFIH currently holds.
	Membership Interests
	The following table presents the changes (all after tax) to membership interests for the nine months ended September 30, 2014:
		Capital Accounts			Affiliate Debt Held by EFIH			Accumulated Other Comprehensive Income (Loss)			Total Membership Interests
	Balance at December 31, 2013	$	(1,148	)	$	(635	)	$	(39	)	$	(1,822	)
	Net income	(357		)	—			—			(357		)
	Effect of debt push-down from EFH Corp.	16			—			—			16
	Balance at September 30, 2014	$	(1,489	)	$	(635	)	$	(39	)	$	(2,163	)
	The following table presents the changes to membership interests for the nine months ended September 30, 2013:
		Capital Accounts			Affiliate Debt Held by EFIH			Accumulated Other Comprehensive Income (Loss)			Total Membership Interests
	Balance at December 31, 2012	$	5,049		$	(5,388	)	$	160		$	(179	)
	Net income	68			—			—			68
	Cash distributions to EFH Corp.	(680		)	—			—			(680		)
	Push-down of deferred net loss on debt exchanges, net of tax	13			—			—			13
	Effect of debt push-down from EFH Corp. (a)	437			—			—			437
	Distribution to EFH Corp. of debt held as investment	(5,778		)	—			—			(5,778		)
	EFH Corp. debt distributed to EFH Corp. ($5.125 billion principal amount)	—			4,524			—			4,524
	Net effects related to Oncor	—			—			1			1
	Net affiliate debt received in debt exchanges ($31 million principal amount)	—			(23		)	—			(23		)
	Interest received on holdings of affiliate debt	—			208			—			208
	Income tax on interest received on holdings of affiliate debt	(73		)	—			—			(73		)
	Recognition in interest income of mark-to-market valuations of investments in affiliate debt upon distribution to EFH Corp.	—			—			(185		)	(185		)
	Other	—			(1		)	—			(1		)
	Balance at September 30, 2013	$	(964	)	$	(680	)	$	(24	)	$	(1,668	)
	________________
	(a)	Represents the effect of a reduction of $420 million of debt pushed down from EFH Corp and related interest and income tax effects.
	Accumulated Other Comprehensive Income (Loss)
	There were no material changes to accumulated other comprehensive income (loss) in the nine months ended September 30, 2014.
	The following table presents the changes to accumulated other comprehensive income (loss) for the nine months ended September 30, 2013. There was no other comprehensive income (loss) before reclassification for the period.
		Dedesignated Cash Flow Hedges - Oncor			Changes in Fair Values of Investment in Debt Securities of Affiliates			Pension and Other Postretirement Employee Benefit Liabilities Adjustments - Oncor			Total Accumulated Other Comprehensive Income (Loss)
	Balance at December 31, 2012	$	(23	)	$	185		$	(2	)	$	160
	Amounts reclassified from accumulated other comprehensive income (loss) and reported in:
	Interest income	—			(284		)	—			(284		)
	Equity in earnings (losses) of unconsolidated subsidiaries	2			—			(1		)	1
	Income tax benefit	—			99			—			99
	Total amount reclassified from accumulated other comprehensive income (loss) during the period	2			(185		)	(1		)	(184		)
	Balance at September 30, 2013	$	(21	)	$	—		$	(3	)	$	(24	)

RelatedParty_Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Related-Party Transactions	'
	RELATED–PARTY TRANSACTIONS
	The following represent EFIH's significant related-party transactions. Also see Note 10 for a discussion of EFH Corp. and TCEH debt securities held by EFIH.
	•	EFH Corp. allocates expense to EFIH for management fees owed by EFH Corp. to the Sponsor Group. This expense, which is reported in SG&A expenses, totaled zero and $3 million for the three and nine months ended September 30, 2014, respectively. There was no allocation of fees to EFIH for the three and nine months ended September 30, 2013. Beginning with the quarterly management fee due December 31, 2013, the Sponsor Group, while reserving the right to receive the fees, directed EFH Corp. to suspend payments of the management fees for an indefinite period. Accordingly, EFIH did not reimburse EFH Corp. for the allocated management fees. Effective with the Petition Date, EFH Corp. suspended allocations of such fees to EFIH. Fees accrued as of the Petition Date have been reclassified to liabilities subject to compromise (LSTC).
	In addition to amounts paid directly by EFIH, a subsidiary of EFH Corp. allocates costs to EFIH for legal and other consulting services associated with EFIH's debt restructuring activities, and EFIH reimburses the subsidiary for the allocated costs on a monthly basis. The allocated expense, which is reported in SG&A expenses, totaled zero and $4 million for the three and nine months ended September 30, 2014, respectively. There was no allocation of legal and other consulting services costs to EFIH for the three and nine months ended September 30, 2013.
	A subsidiary of EFH Corp. bills EFIH for administrative services at cost, and EFIH reimburses the subsidiary for the allocated costs on a monthly basis. This expense, which is reported in SG&A expenses, totaled $2 million and $3 million for the three and nine months ended September 30, 2014, respectively. There was no allocation of administrative service costs to EFIH for the three and nine months ended September 30, 2013.
	•	EFH Corp. files consolidated federal income tax and Texas state margin tax returns, and under a Federal and State Income Tax Allocation Agreement, allocates income taxes to EFIH substantially as if it were filing its own corporate income tax returns. At September 30, 2014 and December 31, 2013, EFIH had current income tax receivables from EFH Corp. totaling $211 million and $110 million, respectively, both of which were fully reserved (see Note 4). EFIH made no income tax payments to EFH Corp. for the nine months ended September 30, 2014. EFIH's income tax payments to EFH Corp. totaled $3 million for the nine months ended September 30, 2013. See discussion below in this note regarding allocation of income tax liabilities to Oncor Holdings and Oncor.
	•	At December 31, 2012, EFH Corp. had demand notes payable (TCEH Demand Notes) to TCEH totaling $698 million arising from borrowings used to fund EFH Corp. debt principal and interest payments and net borrowings for general corporate purposes. EFIH was a guarantor of these demand notes. EFH Corp. settled the balance of the TCEH Demand Notes in January 2013 using the cash distribution from EFIH discussed in Note 10.
	•	Affiliates of the Sponsor Group have sold or acquired, and in the future may sell or acquire, debt or debt securities issued by EFIH in open market transactions or through loan syndications.
	See Note 7 regarding guarantees and push-down of certain EFH Corp. pre-petition debt and Note 10 regarding distributions to, and contributions from, EFH Corp.
	Significant related-party transactions between Oncor Holdings (including its consolidated subsidiary Oncor) and EFH Corp., other affiliates of EFH Corp. and the Sponsor Group are as follows:
	•	Oncor receives payments from subsidiaries of TCEH for services it provides, principally the delivery of electricity. Revenues recorded by Oncor for these services totaled $281 million and $273 million for the three months ended September 30, 2014 and 2013, respectively, and $746 million and $728 million for the nine months ended September 30, 2014 and 2013, respectively. The fees are based on rates regulated by the PUCT that apply to all REPs. These revenues from subsidiaries of TCEH represented 26% and 28% of Oncor Holdings' operating revenues for the nine months ended September 30, 2014 and 2013, respectively. Oncor Holdings' condensed consolidated balance sheets at September 30, 2014 and December 31, 2013 reflect receivables from affiliates totaling $152 million and $135 million, respectively, consisting almost entirely of trade receivables from subsidiaries of TCEH related to these electricity delivery fees.
	•	Oncor pays EFH Corp. subsidiaries for financial and other administrative services and shared facilities at cost. Such amounts increased Oncor's reported operation and maintenance expense by $8 million for both the three months ended September 30, 2014 and 2013 and $23 million and $24 million for the nine months ended September 30, 2014 and 2013, respectively.
	•	Under Texas regulatory provisions, the trust fund for decommissioning the Comanche Peak nuclear generation facility (reported on TCEH's condensed consolidated balance sheets) is funded by a delivery fee surcharge collected from REPs by Oncor, as collection agent, and remitted monthly to TCEH. The delivery fee surcharges remitted to TCEH totaled $5 million for both the three months ended September 30, 2014 and 2013 and $13 million and $12 million for the nine months ended September 30, 2014 and 2013, respectively.
	•	EFH Corp. files a consolidated federal income tax return that includes Oncor Holdings' results. Oncor is not a member of EFH Corp.'s consolidated tax group, but EFH Corp.'s consolidated federal income tax return includes EFH Corp.'s portion of Oncor's results as a result of EFH Corp.'s equity ownership in Oncor. EFH Corp. also files a consolidated Texas state margin tax return that includes all of Oncor Holdings' and Oncor's results. However, under a Federal and State Income Tax Allocation Agreement, Oncor Holdings and Oncor record their federal income tax and Texas state margin taxes as if Oncor Holdings and Oncor were filing their own corporate income tax returns.
	At September 30, 2014, Oncor Holdings had a current payable to EFH Corp. related to federal and state income taxes totaling $56 million, all of which related to Oncor. The Oncor payable to EFH Corp. represented a $38 million federal income tax payable and an $18 million state margin tax payable. At December 31, 2013, Oncor Holdings had a current payable totaling $7 million, which included $5 million payable by Oncor. Oncor's liability at December 31, 2013 consists of a $23 million state margin tax payable net of an $18 million federal income tax receivable.
	For the nine months ended September 30, 2014, Oncor Holdings and Oncor made income tax payments to EFH Corp totaling $17 million and $163 million, respectively. For the nine months ended September 30, 2013, Oncor Holdings and Oncor made income tax payments to EFH Corp. totaling $24 million and $60 million, respectively. The 2013 net payment included $33 million from Oncor related to the 1997 through 2002 IRS appeals settlement and a $10 million refund paid to Oncor related to the filing of amended Texas franchise tax returns for 1997 through 2001.
	•	Oncor has requirements in place to assure adequate creditworthiness of any REP to support the REP's obligation to collect securitization bond-related (transition) charges on behalf of Oncor Electric Delivery Transition Bond Company LLC. Under these requirements, and as a result of TCEH's credit rating being below investment grade, TCEH is required to post collateral support in an amount equal to estimated transition charges over specified time periods. Accordingly, at both September 30, 2014 and December 31, 2013, TCEH had posted letters of credit and/or cash in the amount of $9 million for Oncor's benefit.
	•	Oncor and Texas Holdings agreed to the terms of a stipulation with major interested parties to resolve all outstanding issues in the PUCT review related to the Merger. As part of this stipulation, TCEH would be required to post a letter of credit in an amount equal to $170 million to secure its payment obligations to Oncor in the event, which has not occurred, two or more rating agencies downgrade Oncor's credit rating below investment grade.
	•	Affiliates of the Sponsor Group have (1) sold or acquired Oncor's debt or debt securities in open market transactions or through loan syndications, and (2) performed various financial advisory, dealer, commercial banking and investment banking services for Oncor and certain of its affiliates for which they have received customary fees and expenses.
	•	Oncor has participated in plans sponsored by EFH Corp. that provide pension, health care and other retiree benefits. Accordingly, Oncor Holdings' consolidated financial statements have reflected allocations to Oncor of amounts related to these retiree benefit plans. In accordance with an agreement between EFH Corp. and Oncor, Oncor ceased participation in EFH Corp.'s OPEB plan effective July 1, 2014 and established its own OPEB plan for Oncor's eligible existing and future retirees and their dependents. Additionally, the Oncor plan participants include those former participants in the EFH Corp. OPEB plan whose employment included service with both Oncor (or a predecessor regulated electricity business) and EFH Corp.'s competitive businesses (split service participants). Under the agreement, EFH Corp. will retain the liability for split service participants' benefits related to their years of service with the competitive business. The methodology for OPEB cost allocations between EFH Corp. and Oncor has not changed, and the plan separation does not materially affect the net assets or cash flows of EFIH.
	•	Until June 30, 2014, Oncor employees participated in a health and welfare benefit program offered by EFH Corp. In connection with Oncor establishing its own health and welfare benefits program, Oncor agreed to pay EFH Corp. $1 million to reimburse EFH Corp. for its increased costs of providing benefits under the EFH Corp. program as a result of Oncor's withdrawal and to compensate EFH Corp. for the administrative work related to the transition. This amount was paid in June 2014.
	Oncor's retained liability under the Employee Retirement Income Security Act of 1974 (ERISA) relates to the nonrecoverable portion of the unfunded obligation of EFH Corp.'s pension plan. In the first quarter 2014, TCEH contributed $20 million to the EFH Corp. pension plan assets, resulting in the plan being fully funded as calculated under the provisions of ERISA.

Supplementary_Financial_Inform

Supplementary Financial Information	9 Months Ended
	Sep. 30, 2014
Supplementary Financial Information [Abstract]	'
Supplementary Financial Information	'
	SUPPLEMENTARY FINANCIAL INFORMATION
	Fair Value of Debt
			September 30, 2014					December 31, 2013
	Debt:		Carrying Amount			Fair		Carrying Amount		Fair
						Value				Value
	Borrowings under debtor-in-possession credit facilities (Note 5)		$	5,400		$	5,380	$	—	$	—
	Pre-petition notes, loans and other debt (excluding capital leases) (Note 7)		3,876			4,387		7,877		7,849
	EFIH determines fair value in accordance with accounting standards, and at September 30, 2014, EFIH's fair value represents Level 2 valuations. EFIH obtains security pricing from an independent party who uses broker quotes and third-party pricing services to determine fair values. Where relevant, these prices are validated through subscription services such as Bloomberg.
	Supplemental Cash Flow Information
		Nine Months Ended September 30,
		2014			2013
	Cash payments related to:
	Interest on EFIH debt	$	316		$	423
	Income taxes	—			3
	Reorganization items (a)	19			—
	Noncash investing and financing activities:
	Principal amount of toggle notes issued in lieu of cash interest	—			83
	Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (Note 7)	—			21
	Reduction of debt pushed down from EFH Corp. (b)	—			(420		)
	Debt exchange transactions (c)	(85		)	14
	Distribution to EFH Corp. of debt held as an investment	—			(5,778		)
	Income tax on interest received on holdings of affiliate debt (Note 5)	—			(73		)
	____________
	(a)	Represents cash payments for legal and other consulting services.
	(b)	For the nine months ended September 30, 2013, represents $838 million principal amount of EFH Corp. debt exchanged (at 50%) for EFIH debt.
	(c)	For the nine months ended September 30, 2014, represents $1.836 billion principal amount of loans issued under the EFIH DIP Facility in excess of $1.673 billion principal amount of EFIH First Lien Notes exchanged and $78 million of related accrued interest (see Note 5). For the nine months ended September 30, 2013 represents $1.302 billion principal amount of EFIH debt issued in exchange for $1.310 billion principal amount of EFH Corp. and EFIH debt and $89 million principal amount of EFIH debt issued in exchange for $95 million principal amount of EFH Corp. debt.

Business_And_Significant_Accou1

Business And Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation, Including Application of Bankruptcy Accounting	'
	Basis of Presentation, Including Application of Bankruptcy Accounting
	The condensed consolidated financial statements have been prepared as if EFIH is a going concern and reflect the application of ASC 852-10, Reorganizations. During the pendency of the Bankruptcy Filing, 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 852-10 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, as well as expenses and income directly associated with the Chapter 11 Cases. See Notes 6 and 7 for discussion of these accounting and reporting changes.
	Investments in unconsolidated subsidiaries, which are 50% or less owned and/or do not meet accounting standards criteria for consolidation, are accounted for under the equity method (see Note 3). 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 EFIH's 2013 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.
Use of Estimates	'
	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 income 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.

Investment_In_Oncor_Holdings_T

Investment In Oncor Holdings (Tables)	9 Months Ended
	Sep. 30, 2014
Investment In Oncor Holdings [Abstract]	'
Schedule of condensed statements of consolidated income of Oncor Holdings and its subsidiaries	'
	Condensed statements of consolidated income of Oncor Holdings and its subsidiaries for the three and nine months ended September 30, 2014 and 2013 are presented below:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Operating revenues	$	1,054		$	966		$	2,883		$	2,640
	Operation and maintenance expenses	(376		)	(315		)	(1,074		)	(919		)
	Depreciation and amortization	(218		)	(207		)	(638		)	(608		)
	Taxes other than income taxes	(115		)	(112		)	(330		)	(315		)
	Other income	3			4			10			14
	Other deductions	(4		)	(2		)	(11		)	(11		)
	Interest income	1			—			3			2
	Interest expense and related charges	(89		)	(94		)	(266		)	(283		)
	Income before income taxes	256			240			577			520
	Income tax expense	(101		)	(97		)	(230		)	(199		)
	Net income	155			143			347			321
	Net income attributable to noncontrolling interests	(32		)	(29		)	(71		)	(66		)
	Net income attributable to Oncor Holdings	$	123		$	114		$	276		$	255
Schedule of assets and liabilities of Oncor Holdings	'
	Assets and liabilities of Oncor Holdings at September 30, 2014 and December 31, 2013 are presented below:
		September 30,			December 31,
		2014			2013
	ASSETS
	Current assets:
	Cash and cash equivalents	$	17		$	28
	Restricted cash	67			52
	Trade accounts receivable — net	469			385
	Trade accounts and other receivables from affiliates	152			135
	Income taxes receivable from EFH Corp.	—			16
	Inventories	76			65
	Accumulated deferred income taxes	11			32
	Prepayments and other current assets	89			82
	Total current assets	881			795
	Restricted cash	16			16
	Other investments	96			91
	Property, plant and equipment — net	12,270			11,902
	Goodwill	4,064			4,064
	Regulatory assets — net	1,111			1,324
	Other noncurrent assets	69			71
	Total assets	$	18,507		$	18,263
	LIABILITIES
	Current liabilities:
	Short-term borrowings	$	720		$	745
	Long-term debt due currently	636			131
	Trade accounts payable — nonaffiliates	133			178
	Income taxes payable to EFH Corp.	56			23
	Accrued taxes other than income	145			169
	Accrued interest	65			95
	Other current liabilities	150			135
	Total current liabilities	1,905			1,476
	Accumulated deferred income taxes	1,839			1,905
	Long-term debt, less amounts due currently	5,041			5,381
	Other noncurrent liabilities and deferred credits	1,837			1,822
	Total liabilities	$	10,622		$	10,584

Reorganization_Items_Tables

Reorganization Items (Tables)	9 Months Ended
	Sep. 30, 2014
Reorganization Items [Abstract]	'
Reorganization Items	'
		Three Months Ended		Post-Petition Period Through
		30-Sep-14		30-Sep-14
	Loss on exchange and settlement of EFIH First Lien Notes (Note 5)	$	—	$	108
	Fees associated with completion of EFIH DIP Facility	—		93
	Expenses related to legal advisory and representation services	5		22
	Expenses related to other professional consulting and advisory services	2		12
	Total reorganization items	$	7	$	235

Liabilities_Subject_to_Comprom1

Liabilities Subject to Compromise (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments	'
	The following table presents LSTC as reported in the condensed consolidated balance sheets at September 30, 2014:
		September 30,
		2014
	Notes, loans and other debt per the following table	$	3,843
	Accrued interest on notes, loans and other debt	137
	Advances and other payables to affiliates	4
	Total liabilities subject to compromise	$	3,984
	Pre-Petition Notes, Loans and Other Debt Reported as Liabilities Subject to Compromise
	All amounts of pre-petition notes, loans and other debt reported as liabilities subject to compromise represent principal amounts.
		September 30,			31-Dec-13
		2014
	Debt issued by EFIH:
	6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 (a)	$	—		$	503
	10% Fixed Senior Secured First Lien Notes due December 1, 2020 (a)	—			3,482
	11% Fixed Senior Secured Second Lien Notes due October 1, 2021	406			406
	11.75% Fixed Senior Secured Second Lien Notes due March 1, 2022	1,750			1,750
	11.25%/12.25% Senior Toggle Notes due December 1, 2018	1,566			1,566
	9.75% Fixed Senior Notes due October 15, 2019	2			2
	Unamortized premium	243			284
	Unamortized discount	(121		)	(146		)
	Total debt issued by EFIH	3,846			7,847
	Pushed down pre-petition debt (b):
	10.875% EFH Corp. Fixed Senior Notes due November 1, 2017	17			17
	11.25%/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017	13			13
	Total pushed down debt	30			30
	Deferred debt issuance and extension costs (c)	(33		)	—
	Total debt	$	3,843		$	7,877
	________________
	(a)	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).
	(b)	Represents 50% of the amount of these EFH Corp. securities guaranteed by EFIH and pushed down per the discussion below under "Guarantees and Push Down of EFH Corp. Pre-Petition Debt."
	(c)	Deferred debt issuance and extension costs were reported in other noncurrent assets at December 31, 2013.

Interest_Expense_and_Related_C1

Interest Expense and Related Charges (Tables)	9 Months Ended
	Sep. 30, 2014
Interest Expense and Related Charges [Abstract]	'
Schedule of Interest Expense and Related Charges	'
	INTEREST EXPENSE AND RELATED CHARGES
		Three Months Ended September 30,					Nine Months Ended September 30,
		2014		2013			2014			2013
	Interest paid/accrued on debtor-in-possession financing	$	58	$	—		$	66		$	—
	Interest paid/accrued on pre-petition debt	—		160			266			470
	Interest expense related to pushed down debt	—		1			1			5
	Interest expense on pre-petition toggle notes payable in additional principal (Note 7)	—		45			65			130
	Amortization of debt exchange premiums	—		(20		)	(24		)	(62		)
	Amortization of debt exchange discounts and issuance costs	—		5			7			23
	Total interest expense and related charges	$	58	$	191		$	381		$	566

Membership_Interests_Tables

Membership Interests (Tables)	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity Note [Abstract]	'
Available-for-sale Securities	'
	The principal amounts, coupon rates, maturities and carrying value of debt of affiliates held at both September 30, 2014 and December 31, 2013 are as follows:
		Principal Amount			Carrying Value
	EFH Corp. 5.55% Fixed Senior Notes Series P due November 15, 2014	$	281		$	185
	EFH Corp. 6.50% Fixed Senior Notes Series Q due November 15, 2024	545			249
	EFH Corp. 6.55% Fixed Senior Notes Series R due November 15, 2034	456			194
	TCEH 10.25% Fixed Senior Notes due November 1, 2015 (both periods include $48 million principal amount of Series B Notes)	79			7
	Balance reported as reduction in membership interests	$	1,361		$	635
Schedule of Minority interests	'
	The following table presents the changes (all after tax) to membership interests for the nine months ended September 30, 2014:
		Capital Accounts			Affiliate Debt Held by EFIH			Accumulated Other Comprehensive Income (Loss)			Total Membership Interests
	Balance at December 31, 2013	$	(1,148	)	$	(635	)	$	(39	)	$	(1,822	)
	Net income	(357		)	—			—			(357		)
	Effect of debt push-down from EFH Corp.	16			—			—			16
	Balance at September 30, 2014	$	(1,489	)	$	(635	)	$	(39	)	$	(2,163	)
	The following table presents the changes to membership interests for the nine months ended September 30, 2013:
		Capital Accounts			Affiliate Debt Held by EFIH			Accumulated Other Comprehensive Income (Loss)			Total Membership Interests
	Balance at December 31, 2012	$	5,049		$	(5,388	)	$	160		$	(179	)
	Net income	68			—			—			68
	Cash distributions to EFH Corp.	(680		)	—			—			(680		)
	Push-down of deferred net loss on debt exchanges, net of tax	13			—			—			13
	Effect of debt push-down from EFH Corp. (a)	437			—			—			437
	Distribution to EFH Corp. of debt held as investment	(5,778		)	—			—			(5,778		)
	EFH Corp. debt distributed to EFH Corp. ($5.125 billion principal amount)	—			4,524			—			4,524
	Net effects related to Oncor	—			—			1			1
	Net affiliate debt received in debt exchanges ($31 million principal amount)	—			(23		)	—			(23		)
	Interest received on holdings of affiliate debt	—			208			—			208
	Income tax on interest received on holdings of affiliate debt	(73		)	—			—			(73		)
	Recognition in interest income of mark-to-market valuations of investments in affiliate debt upon distribution to EFH Corp.	—			—			(185		)	(185		)
	Other	—			(1		)	—			(1		)
	Balance at September 30, 2013	$	(964	)	$	(680	)	$	(24	)	$	(1,668	)
	________________
	(a)	Represents the effect of a reduction of $420 million of debt pushed down from EFH Corp and related interest and income tax effects.
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	wing table presents the changes to accumulated other comprehensive income (loss) for the nine months ended September 30, 2013. There was no other comprehensive income (loss) before reclassification for the period.
		Dedesignated Cash Flow Hedges - Oncor			Changes in Fair Values of Investment in Debt Securities of Affiliates			Pension and Other Postretirement Employee Benefit Liabilities Adjustments - Oncor			Total Accumulated Other Comprehensive Income (Loss)
	Balance at December 31, 2012	$	(23	)	$	185		$	(2	)	$	160
	Amounts reclassified from accumulated other comprehensive income (loss) and reported in:
	Interest income	—			(284		)	—			(284		)
	Equity in earnings (losses) of unconsolidated subsidiaries	2			—			(1		)	1
	Income tax benefit	—			99			—			99
	Total amount reclassified from accumulated other comprehensive income (loss) during the period	2			(185		)	(1		)	(184		)
	Balance at September 30, 2013	$	(21	)	$	—		$	(3	)	$	(24	)

Supplementary_Financial_Inform1

Supplementary Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Supplementary Financial Information [Abstract]	'
Fair Value of Debt	'
	Fair Value of Debt
			September 30, 2014					December 31, 2013
	Debt:		Carrying Amount			Fair		Carrying Amount		Fair
						Value				Value
	Borrowings under debtor-in-possession credit facilities (Note 5)		$	5,400		$	5,380	$	—	$	—
	Pre-petition notes, loans and other debt (excluding capital leases) (Note 7)		3,876			4,387		7,877		7,849
Schedule of cash flow, supplemental disclosures	'
	Supplemental Cash Flow Information
		Nine Months Ended September 30,
		2014			2013
	Cash payments related to:
	Interest on EFIH debt	$	316		$	423
	Income taxes	—			3
	Reorganization items (a)	19			—
	Noncash investing and financing activities:
	Principal amount of toggle notes issued in lieu of cash interest	—			83
	Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (Note 7)	—			21
	Reduction of debt pushed down from EFH Corp. (b)	—			(420		)
	Debt exchange transactions (c)	(85		)	14
	Distribution to EFH Corp. of debt held as an investment	—			(5,778		)
	Income tax on interest received on holdings of affiliate debt (Note 5)	—			(73		)
	____________
	(a)	Represents cash payments for legal and other consulting services.
	(b)	For the nine months ended September 30, 2013, represents $838 million principal amount of EFH Corp. debt exchanged (at 50%) for EFIH debt.
	(c)	For the nine months ended September 30, 2014, represents $1.836 billion principal amount of loans issued under the EFIH DIP Facility in excess of $1.673 billion principal amount of EFIH First Lien Notes exchanged and $78 million of related accrued interest (see Note 5). For the nine months ended September 30, 2013 represents $1.302 billion principal amount of EFIH debt issued in exchange for $1.310 billion principal amount of EFH Corp. and EFIH debt and $89 million principal amount of EFIH debt issued in exchange for $95 million principal amount of EFH Corp. debt.

Business_And_Significant_Accou2

Business And Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Nov. 30, 2008
		Oncor [Member]	Oncor [Member]
Variable Interest Entity [Line Items]	'	'	'
Equity Method Investment, Maximum Ownership Percentage For Accounting Treatment	50.00%	'	'
Business and Significant Accounting Policies	'	'	'
Equity method investment, ownership (as a percent)	'	80.00%	'
Sale of equity ownership interest (as a percent)	'	'	19.75%

Investment_In_Oncor_Holdings_O

Investment In Oncor Holdings (Oncor Holdings and Distributions from Oncor Holdings) (Details) (USD $)	9 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Apr. 29, 2014
				Oncor [Member]	Oncor Holdings [Member]	Oncor Holdings [Member]	Texas Competitive Electric Holdings Company LLC [Member]
							Oncor Holdings [Member]
							Oncor [Member]
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'	'	'
Equity method investment, ownership (as a percent)	'	'	'	80.00%	'	'	'
Investment in unconsolidated subsidiary	$6,098	'	$5,950	'	'	'	'
Distributions of earnings from unconsolidated subsidiaries	128	148	'	'	128	148	'
Eligible distributions after accounting for regulatory restrictions	'	'	'	'	193	'	'
Ratio of debt to equity, debt (as a percent)	'	'	'	'	60.00%	'	'
Ratio of debt to equity, equity (as a percent)	'	'	'	'	40.00%	'	'
Ratio of regulatory capitalization, debt (as a percent)	'	'	'	'	58.70%	'	'
Ratio of regulatory capitalization, equity (as a percent)	'	'	'	'	41.30%	'	'
Equity Method Investment, Summarized Financial Information, Trade accounts and other receivables from affiliates	'	'	'	'	'	'	$109

Investment_In_Oncor_Holdings_O1

Investment In Oncor Holdings (Oncor Holdings Financial Statements) (Details) (Variable Interest Entity, Primary Beneficiary [Member], Oncor Holdings [Member], USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Variable Interest Entity, Primary Beneficiary [Member] | Oncor Holdings [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Operating revenues	$1,054	$966	$2,883	$2,640	'
Operation and maintenance expenses	-376	-315	-1,074	-919	'
Depreciation and amortization	-218	-207	-638	-608	'
Taxes other than income taxes	-115	-112	-330	-315	'
Other income	3	4	10	14	'
Other deductions	-4	-2	-11	-11	'
Interest income	1	0	3	2	'
Interest expense and related charges	-89	-94	-266	-283	'
Income before income taxes	256	240	577	520	'
Income tax expense	-101	-97	-230	-199	'
Net income	155	143	347	321	'
Net income attributable to noncontrolling interests	-32	-29	-71	-66	'
Net income attributable to Oncor Holdings	123	114	276	255	'
Current assets:	'	'	'	'	'
Cash and cash equivalents	17	'	17	'	28
Restricted cash	67	'	67	'	52
Trade accounts receivable b net	469	'	469	'	385
Trade accounts and other receivables from affiliates	152	'	152	'	135
Income taxes receivable from EFH Corp.	0	'	0	'	16
Inventories	76	'	76	'	65
Accumulated deferred income taxes	11	'	11	'	32
Prepayments and other current assets	89	'	89	'	82
Total current assets	881	'	881	'	795
Restricted cash	16	'	16	'	16
Other investments	96	'	96	'	91
Property, plant and equipment b net	12,270	'	12,270	'	11,902
Goodwill	4,064	'	4,064	'	4,064
Regulatory assets b net	1,111	'	1,111	'	1,324
Other noncurrent assets	69	'	69	'	71
Total assets	18,507	'	18,507	'	18,263
Current liabilities:	'	'	'	'	'
Short-term borrowings	720	'	720	'	745
Long-term debt due currently	636	'	636	'	131
Trade accounts payable b nonaffiliates	133	'	133	'	178
Income taxes payable to EFH Corp.	56	'	56	'	23
Accrued taxes other than income	145	'	145	'	169
Accrued interest	65	'	65	'	95
Other current liabilities	150	'	150	'	135
Total current liabilities	1,905	'	1,905	'	1,476
Accumulated deferred income taxes	1,839	'	1,839	'	1,905
Long-term debt, less amounts due currently	5,041	'	5,041	'	5,381
Other noncurrent liabilities and deferred credits	1,837	'	1,837	'	1,822
Total liabilities	$10,622	'	$10,622	'	$10,584

Other_Deductions_Details

Other Deductions (Details) (Energy Future Holdings Corp. [Member], USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Energy Future Holdings Corp. [Member]	'	'	'
Related Party Transaction [Line Items]	'	'	'
Other Nonoperating Expense, Other	$12	$211	'
Income Taxes Receivable	'	'	$110

DebtorinPossession_Borrowings_1

Debtor-in-Possession Borrowings Facilities (Details) (USD $)

3 Months Ended

5 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Jan. 31, 2013

Sep. 30, 2014

Jun. 30, 2014

Sep. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Secured Debt [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

RSA First Lien Note Parties And Qualifying Holders of EFIH First Lien Notes Tendered By Participation Date [Member]

RSA First Lien Note Parties And Qualifying Holders of EFIH First Lien Notes Tendered By Participation Date [Member]

Non-Settling Holders Of EFIH First Lien Notes [Member]

Debtor-In-Possession Facility [Member]

Senior Secured Super-Priority First Lien Term Loan [Member]

Senior Secured Super-Priority First Lien Term Loan [Member]

Fixed Senior Secured First Lien 6.875% Notes and Fixed Senior Secured First Lien 10% Notes [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

First-Lien Debtor-in-Possession Facility [Member]

First-Lien Debtor-in-Possession Facility [Member]

Secured Debt [Member]

Fixed Senior Secured First Lien 6.875% Notes and Fixed Senior Secured First Lien 10% Notes [Member]

Debtor-in-Possession Financing, First Lien Debt Facility Agreement [Member]

Fixed Senior Secured First Lien 6.875% Notes and Fixed Senior Secured First Lien 10% Notes [Member]

Secured Debt [Member]

First-Lien Debtor-in-Possession Facility [Member]

Secured Debt [Member]

Line of Credit Facility [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Interest Rate on Borrowings Outstanding

'

'

'

'

'

'

'

'

4.25%

'

'

'

'

Principal Amount Of Affiliate Debt Repurchased

'

'

'

'

'

'

'

'

'

$2,312,000,000

'

'

'

Debtor-in-Possession Financing, Amount Arranged

'

'

'

'

'

'

'

'

5,400,000,000

'

'

'

'

Debtor-In-Possession Financing, Borrowings Used In Exchange Transaction For Pre-Petition Debt

'

'

'

'

'

'

'

1,836,000,000

'

'

'

'

'

Principal Amount Of Affiliate Debt Acquired In Exchange Transaction

'

'

'

'

'

1,310,000,000

'

'

'

1,673,000,000

'

'

'

Debt Instrument, Increase, Accrued Interest

'

'

'

'

'

'

'

'

'

'

78,000,000

'

128,000,000

Debtor-in-Possession Financing, Debt Settlement, Settlement Price, Percentage of Principal and Percentage of Accrued and Unpaid Interest, Percentage of Principal

'

'

'

'

'

'

'

'

'

'

'

105.00%

'

Debtor-in-Possession Financing, Debt Settlement, Settlement Price, Percentage of Principal and Percentage of Accrued and Unpaid Interest, Percentage of Accrued and Unpaid Interest

'

'

'

'

'

'

'

'

'

'

'

101.00%

'

Debtor-In-Possession Financing, Borrowings Used to Repay Pre-Petition Debt

'

'

'

'

'

'

'

2,438,000,000

'

'

'

'

'

Debtor-In-Possession Financing, Borrowings Issued And Held As Cash

'

'

'

'

'

'

'

1,038,000,000

'

'

'

'

'

Loss on exchange and settlement of EFIH First Lien Notes (Notes 5 and 6)

0

108,000,000

108,000,000

0

'

'

'

'

108,000,000

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

3.25%

'

'

'

'

Borrowings under debtor-in-possession credit facilities (Note 5)

5,400,000,000

5,400,000,000

5,400,000,000

'

0

'

'

'

5,400,000,000

'

'

'

'

Debtor In Possession Financing, Liquidity Covenant, Unrestricted Cash Balance, Minimum

'

'

'

'

'

'

'

'

150,000,000

'

'

'

'

Debtor-In-Possession Financing, Incremental Junior Lien Debt Allowed, Maximum

'

'

'

'

'

'

$3,000,000,000

'

'

'

'

'

'

Reorganization_Items_Details

Reorganization Items (Details) (USD $)	3 Months Ended		5 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Schedule of Reorganization Costs [Line Items]	'	'	'	'	'
Loss on exchange and settlement of EFIH First Lien Notes (Notes 5 and 6)	$0	'	$108	$108	$0
Debtor Reorganization Items, Debtor-in-Possession Facility Financing Costs	0	'	93	'	'
Debtor Reorganization Items, Legal Fees	5	'	22	'	'
Debtor Reorganization Items, Consulting and Advisory Professional Fees	2	'	12	'	'
Reorganization Items	7	0	235	235	0
First-Lien Debtor-in-Possession Facility [Member] | Senior Secured Super-Priority First Lien Term Loan [Member] | Energy Future Intermediate Holding CO LLC [Member]	'	'	'	'	'
Schedule of Reorganization Costs [Line Items]	'	'	'	'	'
Loss on exchange and settlement of EFIH First Lien Notes (Notes 5 and 6)	'	'	'	$108	'

Liabilities_Subject_to_Comprom2

Liabilities Subject to Compromise (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Disclosure [Abstract]	'	'
Liabilities Subject To Compromise, Debt	$3,843	'
Liabilities Subject To Compromise, Accrued Interest	137	'
Liabilities Subject To Compromise, Advances And Other Payables To Affiliates	4	'
Liabilities subject to compromise (Note 7)	$3,984	$0

Liabilities_Subject_to_Comprom3

Liabilities Subject to Compromise - Debtor-In-Possession (DIP) Facilities (Details)	Sep. 30, 2014
6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member] | Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member]	'
Line of Credit Facility [Line Items]	'
Stated interest rate (as a percent)	6.88%
10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member] | Push Down Debt [Member]	'
Line of Credit Facility [Line Items]	'
Effective interest rate (as a percent)	10.00%

Liabilities_Subject_to_Comprom4

Liabilities Subject to Compromise - Long-Term Debt (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Debt Instrument [Line Items]	'		'
Total debt	$3,843		$7,877
Liabilities Subject To Compromise, Debt	3,843		'
Percentage of securities guaranteed by and push down debt	50.00%		'
Secured Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Unamortized premium	'		284
Unamortized discount	'		-146
Total debt	'		7,847
Liabilities Subject To Compromise, Debt	3,846		'
Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		503
Liabilities Subject To Compromise, Debt	0	[1]	'
Secured Debt [Member] | 10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		3,482
Liabilities Subject To Compromise, Debt	0	[1]	'
Secured Debt [Member] | 11% Senior Secured Second Lien Notes due October 1, 2021 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		406
Stated interest rate (as a percent)	11.00%		'
Secured Debt [Member] | 11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		1,750
Stated interest rate (as a percent)	11.75%		'
Secured Debt [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		1,566
Secured Debt [Member] | 9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		2
Liabilities Subject To Compromise, Debt	2		'
Stated interest rate (as a percent)	9.75%		'
Unamortized Discount [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	-121		'
Unamortized Premium [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	243		'
Push Down Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Total debt	'		30	[2]
Liabilities Subject To Compromise, Debt	30	[2]	'
Push Down Debt [Member] | 10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	'		'
Debt Instrument [Line Items]	'		'
Effective interest rate (as a percent)	10.00%		'
Push Down Debt [Member] | Fixed Senior Secured First Lien 10% Notes due January 15, 2020 [Member]	'		'
Debt Instrument [Line Items]	'		'
Effective interest rate (as a percent)	10.00%		'
Push Down Debt [Member] | 9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (as a percent)	9.75%		'
Push Down Debt [Member] | 10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		17	[2]
Liabilities Subject To Compromise, Debt	17	[2]	'
Stated interest rate (as a percent)	10.88%		'
Push Down Debt [Member] | 11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		13	[2]
Liabilities Subject To Compromise, Debt	13	[2]	'
Deferred Debt Issuance And Extension Costs [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	-33	[3]	0
Minimum [Member] | Push Down Debt [Member] | 11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Effective interest rate (as a percent)	11.25%		'
Maximum [Member] | Push Down Debt [Member] | 11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Effective interest rate (as a percent)	12.00%		'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Stated interest rate (as a percent)	6.88%		'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 11% Senior Secured Second Lien Notes due October 1, 2021 [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	406		'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	1,750		'
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	$1,566		'
Energy Future Intermediate Holding CO LLC [Member] | Minimum [Member] | Senior Notes [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Effective interest rate (as a percent)	11.25%		'
Energy Future Intermediate Holding CO LLC [Member] | Maximum [Member] | Senior Notes [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Effective interest rate (as a percent)	12.25%		'
[1]	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).
[2]	Represents 50% of the amount of these EFH Corp. securities guaranteed by EFIH and pushed down per the discussion below under "Guarantees and Push Down of EFH Corp. Pre-Petition Debt."
[3]	or the nine months ended SeptemberB 30, 2014, represents $1.836 billion principal amount of loans issued under the EFIH DIP Facility in excess of $1.673 billion principal amount of EFIH First Lien Notes exchanged and $78 million of related accrued interest (see Note 5). For the nine months ended SeptemberB 30, 2013 represents $1.302 billion principal amount of EFIH debt issued in exchange for $1.310 billion principal amount of EFH Corp. and EFIH debt and $89 million principal amount of EFIH debt issued in exchange for $95 million principal amount of EFH Corp. debt.

Liabilities_Subject_to_Comprom5

Liabilities Subject to Compromise - Guarantees and Push Down of EFH Corp. Debt (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Debt Instrument [Line Items]	'	'
Debt Instrument, Percentage of Securities Guaranteed by and Push Down Debt	50.00%	'
Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (Note 7)	$0	$21
Payment of Interest on Pushed-down Debt Accounted for as a Contribution of Capital	'	21
Push Down Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt, gross	30	'
Push Down Debt [Member] | Energy Future Holdings Corp. [Member]	'	'
Debt Instrument [Line Items]	'	'
Percentage of principal plus unamortized premium of related party Merger-related debt guaranteed by parent company (as a percent)	50.00%	50.00%
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument Principal Amount Guarantee Obligations Of Subsidiaries	60	'
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member] | 10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member] | Financial Guarantee [Member] | Subject to Push Down [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument Principal Amount Guarantee Obligations Of Subsidiaries	33	'
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member] | 11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member] | Financial Guarantee [Member] | Subject to Push Down [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument Principal Amount Guarantee Obligations Of Subsidiaries	$27	'

Liabilities_Subject_to_Comprom6

Liabilities Subject to Compromise - Information Regarding Other Significant Outstanding Debt (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Secured Debt [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt, gross	'	$1,566
Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt, gross	'	$503
Pledged Ownership Membership Interest Percentage	100.00%	'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	7.13%	'
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	7.38%	'
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	11.50%	'
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	11.75%	'

Liabilities_Subject_to_Comprom7

Liabilities Subject to Compromise - EFIH 6.875% Senior Secured Notes (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014		Dec. 31, 2013	Sep. 30, 2014
In Millions, unless otherwise specified		Secured Debt [Member]	Secured Debt [Member]		Secured Debt [Member]	Energy Future Intermediate Holding CO LLC [Member]
			6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]		6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	Secured Debt [Member]
						6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]
Debt Instrument [Line Items]	'	'	'		'	'
Liabilities Subject To Compromise, Debt	$3,843	$3,846	$0	[1]	'	'
Long-term debt, gross	'	'	'		$503	'
Pledged Ownership Membership Interest Percentage	'	'	100.00%		'	'
Stated interest rate (as a percent)	'	'	'		'	6.88%
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	'	'	'		'	0.25%
Debt instrument registration default if not filed and declared effective after original issue date, incremental variable interest rate increase after first ninety day period	'	'	'		'	0.50%
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	'	'	'		'	7.13%
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	'	'	'		'	7.38%
[1]	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).

Liabilities_Subject_to_Comprom8

Liabilities Subject to Compromise - EFIH 10% Senior Secured Debt (Details) (USD $)	Sep. 30, 2014	Jan. 31, 2013	Sep. 30, 2014	Jan. 31, 2013	Sep. 30, 2014		Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2014
In Millions, unless otherwise specified		Secured Debt [Member]	Secured Debt [Member]	Secured Debt [Member]	Secured Debt [Member]		Secured Debt [Member]	Energy Future Intermediate Holding CO LLC [Member]	Energy Future Intermediate Holding CO LLC [Member]
				10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]		10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	Secured Debt [Member]	Secured Debt [Member]
								Senior 10 Percent Secured Notes Due 2020 [Member]	10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]
Debt Instrument [Line Items]	'	'	'	'	'		'	'	'
Liabilities Subject To Compromise, Debt	$3,843	'	$3,846	'	$0	[1]	'	'	'
Long Term Debt And Capital Leases Issued, Principal Amount	'	89	'	1,302	'		'	1,302	'
Long-term debt, gross	'	'	'	'	'		$3,482	'	'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	'	'	'	'	0.25%		'	'	'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, total variable interest rate increase after first ninety day period	'	'	'	'	'		'	'	0.25%
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	'	'	'	'	10.25%		'	'	'
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	'	'	'	'	10.50%		'	'	'
[1]	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).

Liabilities_Subject_to_Comprom9

Liabilities Subject to Compromise - EFIH 11% Senior Secured Second Lien Notes (Details) (USD $)	Sep. 30, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'
Liabilities Subject To Compromise, Debt	$3,843
Secured Debt [Member]	'
Debt Instrument [Line Items]	'
Liabilities Subject To Compromise, Debt	3,846
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 11% Senior Secured Second Lien Notes due October 1, 2021 [Member]	'
Debt Instrument [Line Items]	'
Liabilities Subject To Compromise, Debt	$406

Recovered_Sheet1

Liabilities Subject to Compromise - EFIH 11.75% Senior Secured Second Lien Notes (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Debt Disclosure [Abstract]	'		'
Liabilities Subject To Compromise, Debt	$3,843		'
Secured Debt [Member]	'		'
Debt Disclosure [Abstract]	'		'
Liabilities Subject To Compromise, Debt	3,846		'
Secured Debt [Member] | 10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	'		'
Debt Disclosure [Abstract]	'		'
Liabilities Subject To Compromise, Debt	0	[1]	'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Long-term debt, gross	'		3,482
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	10.25%		'
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	10.50%		'
Secured Debt [Member] | 11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		1,750
Secured Debt [Member] | Senior Toggle 11 Point 25 Percent/ 12 Point 25 Percent Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		1,566
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	'		'
Debt Disclosure [Abstract]	'		'
Liabilities Subject To Compromise, Debt	1,750		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Debt instrument registration default if not filed and declared effective after original issue date, incremental variable interest rate increase after first ninety day period	0.25%		'
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	12.00%		'
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	12.50%		'
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member] | Senior Toggle 11 Point 25 Percent/ 12 Point 25 Percent Notes due December 1, 2018 [Member]	'		'
Debt Disclosure [Abstract]	'		'
Liabilities Subject To Compromise, Debt	$1,566		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Debt Instrument Registration Default If Not Fled And Declared Effective After Original Issue Date, Total Interest Rate Percentage For First Ninety Days	11.50%		'
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	11.75%		'
[1]	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).

Recovered_Sheet2

Liabilities Subject to Compromise - EFIH 11.25%/12.25% Senior Toggle Notes (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	$3,843		'
Secured Debt [Member]	'		'
Debt Instrument [Line Items]	'		'
Liabilities Subject To Compromise, Debt	3,846		'
Secured Debt [Member] | 10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	'		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Long-term debt, gross	'		3,482
Liabilities Subject To Compromise, Debt	0	[1]	'
Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		503
Liabilities Subject To Compromise, Debt	0	[1]	'
Secured Debt [Member] | Senior Secured Second Lien 11.75% Notes due March 1, 2022 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		1,750
Secured Debt [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Long-term debt, gross	'		1,566
Until June 1, 2016 [Member] | Senior Notes [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Options to Pay Interest, Percentage Allowed in Cash	50.00%		'
Debt Instrument, Options to Pay Interest, Percentage Allowed in PIK Interest	50.00%		'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	'		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, total variable interest rate increase after first ninety day period	0.25%		'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Energy Future Intermediate Holding CO LLC [Member] | Secured Debt [Member] | Senior Secured Second Lien 11.75% Notes due March 1, 2022 [Member]	'		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Liabilities Subject To Compromise, Debt	1,750		'
Energy Future Intermediate Holding CO LLC [Member] | Senior Notes [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'		'
Debt Instrument [Line Items]	'		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	0.25%		'
Liabilities Subject To Compromise, Debt	$1,566		'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, total variable interest rate increase after first ninety day period	0.25%		'
[1]	The EFIH First Lien Notes were exchanged or settled in June 2014 (see Note 5).

Interest_Expense_and_Related_C2

Interest Expense and Related Charges (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest Expense and Related Charges [Line Items]	'	'	'	'
Debtor-In-Possession Financing, Interest Paid And Accrued	$58	$0	$66	$0
Interest Expense, Debt	0	160	266	470
Interest related to pushed down debt	0	1	1	5
Interest expense on toggle notes payable in additional principal (Notes 7 and 8)	0	45	65	130
Amortization of Debt Discount (Premium)	0	-20	-24	-62
Debt Related Commitment Fees and Debt Issuance Costs	0	5	7	23
Interest Expense	$58	$191	$381	$566

Interest_Expense_and_Related_C3

Interest Expense and Related Charges - Contractual Interest Expense on Pre-Petition Liabilities Classified As Liabilities Subject to Compromise (Details) (Energy Future Intermediate Holding CO LLC [Member], USD $)	5 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Energy Future Intermediate Holding CO LLC [Member]	'
Contractual Interest Expense On Pre-Petition Liabilities [Line Items]	'
Contractual Interest Expense On Pre-Petition Liabilities Classified As Liabilities Subject To Compromise	$248
Interest Expense On Prepetition Liabilities Recognized In Statement Of Operations, Paid or Accrued Amounts Allowed On Notes Exchanged-Settled	54
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations	$194

Commitments_And_Contingencies_

Commitments And Contingencies (Details) (Pending Litigation [Member], USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
EFIH First-Lien Makewhole Claim [Member]	'
Loss Contingencies [Line Items]	'
Loss Contingency, Damages Sought, Value	$432
EFIH Second-Lien Makewhole Claim [Member]	'
Loss Contingencies [Line Items]	'
Loss Contingency, Damages Sought, Value	$652

Membership_Interests_Narrative

Membership Interests (Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2013	Sep. 30, 2014	Sep. 30, 2013
Distribution Restrictions [Line Items]	'	'	'
Cash Dividends Paid to Parent Company	$680	'	$680
Interest Received on Holdings of long-term debt of affiliates	'	0	-208
Mark-to-market gain reclassified from AOCI	'	'	284
Effect of Reduction of Push Down Debt	'	'	420
Senior Notes [Member] | Related Party Transactions, Returned Debt as Dividend [Member]	'	'	'
Distribution Restrictions [Line Items]	'	'	'
Debt Instrument, Principal Amounts Cancelled	'	'	6,360
Long-Term Debt of Affiliate Held by EFIH [Member]	'	'	'
Distribution Restrictions [Line Items]	'	'	'
Cash Dividends Paid to Parent Company	'	'	0
Interest Received on Holdings of long-term debt of affiliates	'	'	($208)

Membership_Interests_Principal

Membership Interests (Principal Amounts, Coupon Rates, Maturities and Carrying Value) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
EFH Corp. 5.55% Fixed Senior Notes Series P due November 15, 2014 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	$281	$281
Available-for-sale Securities, Fair Value Disclosure	185	185
EFH Corp. 6.50% Fixed Senior Notes Series Q due November 15, 2024 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	545	545
Available-for-sale Securities, Fair Value Disclosure	249	249
EFH Corp. 6.55% Fixed Senior Notes Series R due November 15, 2034 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	456	456
Available-for-sale Securities, Fair Value Disclosure	194	194
Fixed 10.25% Senior Notes due November 1, 2015 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	79	79
Available-for-sale Securities, Fair Value Disclosure	7	7
Debt Securities [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	1,361	1,361
Available-for-sale Securities, Fair Value Disclosure	635	635
Senior Notes [Member] | EFH Corp. 5.55% Fixed Senior Notes Series P due November 15, 2014 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Stated interest rate (as a percent)	5.55%	'
Senior Notes [Member] | EFH Corp. 6.50% Fixed Senior Notes Series Q due November 15, 2024 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Stated interest rate (as a percent)	6.50%	'
Senior Notes [Member] | EFH Corp. 6.55% Fixed Senior Notes Series R due November 15, 2034 [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Stated interest rate (as a percent)	6.55%	'
Senior Notes [Member] | Fixed 10.25% Senior Notes due November 1, 2015, Series B [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Stated interest rate (as a percent)	10.25%	'
TCEH Corp. [Member] | Series B [Member]	'	'
Stockholders' Equity [Line Items]	'	'
Notes Payable, Current	$48	$48

Membership_Interests_Membershi

Membership Interests (Membership Interests) (Details) (USD $)

1 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Jan. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Reclassification out of Accumulated Other Comprehensive Income [Member]

Capital Accounts [Member]

Capital Accounts [Member]

Long-Term Debt of Affiliate Held by EFIH [Member]

Long-Term Debt of Affiliate Held by EFIH [Member]

Long-Term Debt of Affiliate Held by EFIH [Member]

Accumulated Other Comprehensive Income [Member]

Accumulated Other Comprehensive Income [Member]

Accumulated Other Comprehensive Income [Member]

Dedesignated Cash Flow Hedges - Oncor [Member]

Changes in Fair Values of Investment in Debt Securities of Affiliates [Member]

Pension and Other Postretirement Employee Benefit Liabilities Adjustments - Oncor [Member]

Additional Paid-in Capital [Member]

Senior Notes [Member]

Energy Future Holdings Corp. [Member]

Reclassification out of Accumulated Other Comprehensive Income [Member]

Reclassification out of Accumulated Other Comprehensive Income [Member]

Reclassification out of Accumulated Other Comprehensive Income [Member]

Senior Notes [Member]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beginning Balance

($179)

'

'

($1,822)

($179)

'

($1,148)

$5,049

($5,388)

($635)

($635)

$160

($39)

($39)

'

'

'

'

'

'

Net income

'

69

-14

-357

68

'

-357

68

0

'

'

'

'

'

'

'

'

'

'

'

Cash distributions to EFH Corp.

-680

'

'

'

-680

'

'

-680

0

'

'

'

'

'

'

'

'

'

'

'

Push-down of deferred net loss on debt exchanges, net of tax

'

'

'

'

13

'

'

13

'

'

'

'

'

'

'

'

'

'

'

'

Effect of debt push-down from EFH Corp.

'

'

'

16

437

[1]

'

16

437

[1]

0

'

'

'

'

'

'

'

'

'

'

'

Distribution to EFH Corp. of debt held as investment

'

'

'

0

-5,778

'

'

-5,778

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Principal Amount of Debt Returned to Affiliate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,125

'

EFH Corp. debt distributed to EFH Corp. ($5.125 billion principal amount)

'

'

'

'

4,524

'

'

'

4,524

'

'

'

'

'

'

'

'

'

'

'

Net effects related to Oncor

'

'

'

'

1

'

'

'

0

'

'

1

'

'

'

'

'

'

'

'

Net affiliate debt received in debt exchanges ($31 million principal amount)

'

'

'

'

-23

'

'

'

-23

'

'

'

'

'

'

'

'

'

'

'

Principal Amount Of Affiliate Debt Acquired In Exchange Transaction

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

31

Interest received on holdings of affiliate debt (Note 10)

'

'

'

0

208

'

'

'

208

'

'

'

'

'

'

'

'

'

'

'

Deferred Tax On Interest Received On Holdings Of Long Term Debt Of Affiliates

'

'

'

0

-73

'

'

-73

'

'

'

'

'

'

'

'

'

'

'

'

Recognition in interest income of mark-to-market valuations of investments in affiliate debt upon distribution to EFH Corp.

'

0

0

0

-185

'

'

'

'

'

'

-185

'

'

'

'

'

'

'

'

Stockholders' Equity, Other

'

'

'

'

-1

'

'

'

-1

'

'

0

'

'

'

'

'

0

'

'

Ending Balance

'

-2,163

-1,668

-2,163

-1,668

'

-1,489

-964

-680

-635

-635

-24

-39

-39

'

'

'

'

'

'

Effect of Reduction of Push Down Debt

'

'

'

'

420

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amounts reclassified from accumulated other comprehensive income (loss) and reported in:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at December 31, 2012

'

'

'

-39

'

160

'

'

'

'

'

'

'

'

-23

185

-2

'

'

'

Interest income

'

'

'

'

'

-284

'

'

'

'

'

'

'

'

0

-284

0

'

'

'

Equity in earnings (losses) of unconsolidated subsidiaries

'

123

114

276

255

1

'

'

'

'

'

'

'

'

2

0

-1

'

'

'

Income tax benefit

'

25

68

215

100

99

'

'

'

'

'

'

'

'

0

99

0

'

'

'

Total amount reclassified from accumulated other comprehensive income (loss) during the period

'

-1

1

0

-184

-184

'

'

'

'

'

'

'

'

2

-185

-1

'

'

'

Balance at September 30, 2013

'

($39)

'

($39)

'

($24)

'

'

'

'

'

'

'

'

($21)

$0

($3)

'

'

'

[1]

(a)Represents the effect of a reduction of $420 million of debt pushed down from EFH Corp and related interest and income tax effects.

RelatedParty_Transactions_Narr

Related-Party Transactions (Narrative) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Jul. 31, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Feb. 28, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

In Millions, unless otherwise specified

Energy Future Holdings Corp. [Member]

Oncor [Member]

Payable Attributable To Income Taxes [Member]

Payable Attributable To Income Taxes [Member]

Payable Attributable To Income Taxes [Member]

Payable Attributable To Income Taxes [Member]

Receivable attributable to income taxes [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

EFH Corp. [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Other Postretirement Benefit Plan [Member]

Internal Revenue Service (IRS) [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Oncor [Member]

Oncor Holdings [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Sponsor Fees Allocated [Member]

Sponsor Fees Allocated [Member]

Sponsor Fees Allocated [Member]

Sponsor Fees Allocated [Member]

Legal And Consulting Fees [Member]

Legal And Consulting Fees [Member]

Legal And Consulting Fees [Member]

Legal And Consulting Fees [Member]

Income tax payments [Member]

Income tax payments [Member]

TCEH to EFH [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Payable Attributable To Income Taxes [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Payable Attributable To Income Taxes [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Collateral posted [Member]

Collateral posted [Member]

Audit Years 1997 Through 2002 [Member]

Internal Revenue Service (IRS) [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

Internal Revenue Service (IRS) [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Line of Credit [Member]

Texas Comptroller Of Public Accounts [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Pension Plan, Defined Benefit [Member]

Minimum [Member]

Oncor [Member]

Oncor [Member]

Indirect Guarantee of Indebtedness [Member]

Audit Years 1997 Through 2001 [Member]

Rating-Agencies-Downgrades

Related Party Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Selling, General and Administrative Expenses From Transactions With Related Party, Allocated To Subsidiary

'

'

'

'

'

'

'

'

'

'

'

'

'

$0

$0

$3

$0

$0

$0

$4

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party

'

'

'

'

'

'

'

'

'

2

0

3

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8

8

23

24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income Taxes Receivable, Current

211

110

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Expenses from Transactions with Related Party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, gross

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

698

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Amounts of Transaction

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

281

273

746

728

'

'

'

'

Percentage Of Equity Method Investment Consolidated Revenues Related To Services Provided To Entity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26.00%

28.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Due to Affiliate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

152

'

152

'

135

'

'

'

Public Utilities, Delivery Fee Surcharge Remitted To Related Party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

5

13

12

'

'

'

'

'

'

'

'

'

'

Due from Affiliate, Current

'

'

'

'

'

'

'

'

18

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Due to Affiliate, Current

'

'

'

'

38

23

18

56

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7

'

'

'

'

'

'

'

'

5

'

'

'

'

'

'

'

'

'

Related Party Tax Expense, Due to Affiliates, Current

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10

'

'

17

24

'

'

'

163

60

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Tax Expense, Due from Affiliates, Current

'

'

'

33

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party, Letter of Credit Posted as Collateral

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9

9

Related Party, Event of Credit Rating Downgrade, Letter of Credit Required to be Posted to Secure Payment Obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

170

'

170

'

'

'

'

'

'

'

'

'

'

'

Related Party, Event of Credit Rating Downgrade, Minimum Number of Rating Agencies Downgrade Below Investment Grade

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

Related Party Transaction, Reimbursement Due to Parent

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Defined Benefit Plan, Contributions by Employer

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$20

'

'

'

'

'

'

'

'

Supplementary_Financial_Inform2

Supplementary Financial Information (Details) (USD $)

9 Months Ended

1 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Jan. 31, 2013

Jan. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jan. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Secured Debt [Member]

Secured Debt [Member]

Senior Secured Super-Priority First Lien Term Loan [Member]

Fixed Senior Secured First Lien 6.875% Notes and Fixed Senior Secured First Lien 10% Notes [Member]

10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Reported Value Measurement [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

RSA First Lien Note Parties And Qualifying Holders of EFIH First Lien Notes Tendered By Participation Date [Member]

Energy Future Holdings Corp. [Member]

First-Lien Debtor-in-Possession Facility [Member]

Secured Debt [Member]

Secured Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Debtor-In-Possession Facility [Member]

Debtor-In-Possession Facility [Member]

Pre-Petition Notes, Loans And Other Debt (Excluding Capital Leases) [Member]

Pre-Petition Notes, Loans And Other Debt (Excluding Capital Leases) [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Estimate of Fair Value Measurement [Member]

Fixed Senior Secured First Lien 6.875% Notes and Fixed Senior Secured First Lien 10% Notes [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Debtor-In-Possession Facility [Member]

Debtor-In-Possession Facility [Member]

Pre-Petition Notes, Loans And Other Debt (Excluding Capital Leases) [Member]

Pre-Petition Notes, Loans And Other Debt (Excluding Capital Leases) [Member]

Secured Debt [Member]

Energy Future Intermediate Holding CO LLC [Member]

Schedule of Held-to-maturity Securities And Available For Sale Securities [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Fair Value Disclosure

'

'

'

'

'

'

'

'

'

$5,400

$0

$3,876

$7,877

$5,380

$0

$4,387

$7,849

'

Cash payments related to:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest on EFIH debt

316

423

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income taxes

0

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reorganization Payments For Legal And Other Consulting Services

19

[1]

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncash investing and financing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount of toggle notes issued in lieu of cash interest

0

83

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (Note 7)

0

21

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction of debt pushed down from EFH Corp. (b)

0

-420

[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt exchange transactions (c)

-85

[3]

14

[3]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Distribution to EFH Corp. of debt held as investment

0

-5,778

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal Amount Of Affiliate Debt Given In Exchange Transaction

'

838

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of principal plus unamortized premium of related party Merger-related debt guaranteed by parent company (as a percent)

'

'

'

'

'

'

'

50.00%

50.00%

'

'

'

'

'

'

'

'

'

Debtor-In-Possession Financing, Borrowings Used In Exchange Transaction For Pre-Petition Debt

'

'

'

'

1,836

'

'

'

'

'

'

'

'

'

'

'

'

'

Long Term Debt And Capital Leases Issued, Principal Amount

'

'

89

'

'

'

1,302

'

'

'

'

'

'

'

'

'

'

'

Principal Amount Of Affiliate Debt Acquired In Exchange Transaction

'

'

1,310

95

'

1,673

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Increase, Accrued Interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

78

Deferred Tax On Interest Received On Holdings Of Long Term Debt Of Affiliates

$0

$73

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Represents cash payments for legal and other consulting services.

[2]

For the nine months ended SeptemberB 30, 2013, represents $838 million principal amount of EFH Corp. debt exchanged (at 50%) for EFIH debt.

[3]

or the nine months ended SeptemberB 30, 2014, represents $1.836 billion principal amount of loans issued under the EFIH DIP Facility in excess of $1.673 billion principal amount of EFIH First Lien Notes exchanged and $78 million of related accrued interest (see Note 5). For the nine months ended SeptemberB 30, 2013 represents $1.302 billion principal amount of EFIH debt issued in exchange for $1.310 billion principal amount of EFH Corp. and EFIH debt and $89 million principal amount of EFIH debt issued in exchange for $95 million principal amount of EFH Corp. debt.