Energy Future Intermediate Holding 10-K 30 Apr 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Apr. 29, 2014	Jun. 30, 2013
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-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	0	'
Entity Outstanding Membership Interests	'At April 29, 2014, the outstanding membership interest in Energy Future Intermediate Holding Company LLC was directly held by Energy Future Holdings Corp.	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$0

Condensed_Statements_Of_Consol

Condensed Statements Of Consolidated Comprehensive Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income (loss)	($102)	$315	$417
Other comprehensive income (loss) — net of tax effects:	'	'	'
Reclassification to interest income of mark-to-market valuations of holdings of affiliate debt (net of tax expense of $99, $— and $—) (Note 8)	-185	0	0
Mark-to-market valuations of holdings of affiliate debt held as available for sale (net of tax expense of $—, $78, and $21) (Note 8)	0	145	40
Net effects related to Oncor — reported in equity in earnings of unconsolidated subsidiaries (net of tax benefit (expense) of $(8), $1 and ($13))	-14	2	-23
Total other comprehensive income (loss)	-199	147	17
Comprehensive income (loss)	($301)	$462	$434

Condensed_Statements_Of_Consol1

Condensed Statements Of Consolidated Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Selling, general and administrative expenses	($20)	$0	$0
Other deductions	-110	0	0
Interest income — affiliates	284	598	552
Interest expense and related charges	-760	-526	-348
Income (loss) before income taxes and equity in earnings of unconsolidated subsidiary	-606	72	204
Income tax benefit (expense) (Note 4)	169	-27	-73
Equity in earnings of unconsolidated subsidiary (net of tax) (Note 3)	335	270	286
Net income (loss)	($102)	$315	$417

Condensed_Statements_Of_Consol2

Condensed Statements Of Consolidated Comprehensive Income (Parenthetical) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reclassification to interest income of mark-to-market valuations of holdings of affiliate debt (net of tax expense of $99, $— and $—) (Note 8)	$99	$0	$0
Mark-to-market valuations of holdings of affiliate debt held as available for sale (net of tax expense of $—, $78, and $21) (Note 8)	0	78	21
Net effects related to Oncor — reported in equity in earnings of unconsolidated subsidiaries (net of tax benefit (expense) of $(8), $1 and $13)	($8)	$1	($13)

Condensed_Statements_Of_Consol3

Condensed Statements Of Consolidated Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows — operating activities:	'	'	'
Net income (loss)	($102)	$315	$417
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:	'	'	'
Equity in earnings of unconsolidated subsidiary	-335	-270	-286
Distributions of earnings from unconsolidated subsidiary	213	147	116
Deferred income taxes, net	-55	-2	-2
PIK interest income on EFH Corp. Toggle Notes held as investment (Note 10)	0	-288	-309
Interest expense related to pushed-down debt of parent (Notes 6 and 10)	6	75	78
Interest expense on toggle notes payable in additional principal (Notes 6 and 10)	176	12	0
Noncash impairment of investment in affiliate debt (Note 10)	0	14	77
Reserve recorded for income tax receivable from EFH Corp. (Note 5)	110	0	0
Accretion of purchase discount on investment in affiliate debt (Note 8)	0	-92	-140
Amortization of debt exchange and issuance costs	-52	5	6
Mark-to-market gain reclassified from accumulated other comprehensive income (Note 8)	-284	0	0
Gain on retirement of EFH Corp. debt acquired in debt exchange	0	0	-3
Changes in operating assets and liabilities:	'	'	'
Income taxes receivable from/payable to EFH Corp. (Note 9)	1	-120	73
Assets	-5	-2	-12
Other liabilities (primarily accrued taxes)	-101	4	-12
Cash provided by (used in) operating activities	-428	-202	3
Cash flows — financing activities:	'	'	'
Issuances of debt (Note 6)	0	2,253	0
Interest received on holdings of affiliate debt (Note 8)	252	0	0
Distributions to EFH Corp. (Note 8)	-680	-950	0
Debt exchange and issuance costs, premiums and discounts	-6	-43	0
Cash provided by (used in) financing activities	-434	1,260	0
Cash flows — investing activities:	'	'	'
Restricted cash related to debt issuance (Note 8)	680	-680	0
Purchase of make-whole agreements between affiliate and unconsolidated subsidiary (Note 9)	0	-159	0
Sale of make-whole agreements between affiliate and unconsolidated subsidiary (Note 9)	0	159	0
Cash provided by (used in) investing activities	680	-680	0
Net change in cash and cash equivalents	-182	378	3
Cash and cash equivalents - beginning balance	424	46	43
Cash and cash equivalents - ending balance	$242	$424	$46

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$242	$424
Restricted cash (Note 6)	0	680
Income taxes receivable from EFH Corp.	0	1
Other current assets	2	0
Total current assets	244	1,105
Investment in Oncor Holdings (Note 3)	5,950	5,842
Other noncurrent assets, principally unamortized debt premium/discount	58	76
Total assets	6,252	7,023
Current liabilities:	'	'
Trade accounts and other payables to affiliates	10	2
Debt (Note 6)	7,877	0
Accumulated deferred income taxes (Note 4)	26	0
Accrued interest	137	137
Total current liabilities	8,050	139
Accumulated deferred income taxes	24	109
Debt (Note 6)	0	6,954
Total liabilities	8,074	7,202
Commitments and Contingencies (Note 7)	'	'
Membership interests (Note 8):	'	'
Capital account	-1,148	5,049
Affiliate debt held by EFIH (Note 8)	-635	-5,388
Accumulated other comprehensive income (loss)	-39	160
Total membership interests	-1,822	-179
Total liabilities and membership interests	$6,252	$7,023

Statements_of_Consolidated_Mem

Statements of Consolidated Membership Interests (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'		'		'
Balance at beginning of period	$5,049		'		'
Net income (loss)	-102		315		417
Cash distributions to EFH Corp.	680		950		0
Distribution to EFH Corp. of debt held as investment	5,778		-160		-45
Income tax on interest received on holdings of affiliate debt	88		0		0
Balance at end of period	-1,148		5,049		'
Interest received on holdings of affiliate debt	-252		0		0
Balance at beginning of period	-179		'		'
Recognition in interest income of mark-to-market valuations of investments in affiliate debt upon distribution to EFH Corp.	-185		0		0
Balance at end of period	-1,822		-179		'
Capital Accounts [Member]	'		'		'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'		'		'
Balance at beginning of period	5,049		5,790		5,195
Net income (loss)	-102		315		417
Cash distributions to EFH Corp.	-680		-950		0
Distribution to EFH Corp. of debt held as investment	-5,778		-160		-45
Income tax on interest received on holdings of affiliate debt	-88		0		0
Deferred gain on debt exchanges, net of deferred tax asset (Note 6)	0		-253		0
Push-down of deferred net loss on debt exchanges, net of tax	13	[1]	0		0
Effect of debt push-down from EFH Corp.	438	[2]	308	[2]	194	[2]
Net effect of Oncor's settlement of reimbursement agreements with TCEH	0		-1		0
Capital contributions	0		0		29	[3]
Balance at end of period	-1,148		5,049		5,790
Balance at beginning of period	-5,388		0		0
Reclassification of investments in debt securities of affiliates	0		-5,388		0
EFH Corp. debt distributed to EFH Corp. ($5.125 billion Principal amount)	4,524		0		0
Net affiliate debt received in debt exchanges ($31 million principal amount)	-23		0		0
Interest received on holdings of affiliate debt	252	[1]	'		'
Balance at end of period	-635		-5,388		0
Balance at beginning of period	-179		5,805		'
Balance at end of period	-1,822		-179		5,805
Accumulated Other Comprehensive Income (Loss) [Member]	'		'		'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'		'		'
Balance at beginning of period	160		15		-2
Recognition in interest income of mark-to-market valuations of investments in affiliate debt upon distribution to EFH Corp.	-185	[4]	0		0
Changes in fair values of investments in debt securities of affiliates	0		145		40
Unrecognized gains (losses) related to pension and other retirement benefit plans assumed by Oncor	-16		-2		0
Other effects related to Oncor	2		2		-23
Balance at end of period	($39)		$160		$15
[1]	Includes $244 million related to EFH Corp. debt held and $8 million related to TCEH debt held. Income tax effect of $88 million on cash interest received reported as a capital transaction.
[2]	Represents the effect of a net reduction of $420 million, $259 million and $142 million in 2013, 2012 and 2011, respectively, of debt pushed down from EFH Corp. (Note 6) and related interest and income tax effects.
[3]	Reflects noncash settlement of certain income taxes payable arising as a result of the sale of equity interests in Oncor.
[4]	Pre-tax amount is $284 million.

Statements_of_Consolidated_Mem1

Statements of Consolidated Membership Interests Statements of Consolidated Membership Interests (Parentheticals) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Effect of Reduction of Push Down Debt	$420		$259	$142
Interest received on holdings of affiliate debt	-252		0	0
Income tax on interest received on holdings of affiliate debt	-88		0	0
Capital Accounts [Member]	'		'	'
Interest received on holdings of affiliate debt	252	[1]	'	'
Income tax on interest received on holdings of affiliate debt	88		0	0
Other comprehensive income (loss), mark-to-market valuations of holdings of long-term debt of affiliates reclassified to Interest income	284	[2]	'	'
Capital Accounts [Member] | EFH Corp. [Member]	'		'	'
Interest received on holdings of affiliate debt	244	[1]	'	'
Capital Accounts [Member] | TCEH Corp. [Member]	'		'	'
Interest received on holdings of affiliate debt	$8	[1]	'	'
[1]	Includes $244 million related to EFH Corp. debt held and $8 million related to TCEH debt held. Income tax effect of $88 million on cash interest received reported as a capital transaction.
[2]	Pre-tax amount is $284 million.

Business_and_Significant_Accou

Business and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
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 the north-central, eastern and western parts of 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 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 6 for discussion of debtor-in-possession financing and classification of debt as current liabilities.
	Basis of Presentation
	The consolidated financial statements have been prepared in accordance with US GAAP. The consolidated financial statements have been prepared as if EFIH is a going concern but do not reflect the application of ASC 852, Reorganizations. EFIH's investment in Oncor Holdings does not meet accounting standards criteria for consolidation and is accounted for under the equity method (see Note 3). All intercompany items and transactions have been eliminated in consolidation. 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. 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.
	Income Taxes
	EFH Corp. files a US federal income tax return that includes the results of EFCH, EFIH, Oncor Holdings and TCEH. Oncor is a partnership for US federal income tax purposes and is not a corporate member of the EFH Corp. consolidated group. Deferred income taxes are provided for temporary differences between the book and tax basis of assets and liabilities as required under accounting rules. (See Note 4).
	Investment in Affiliate Debt
	Investments in affiliate debt are classified as a reduction of membership interests effective December 31, 2012 (see Note 8). Prior to December 2012, investments in affiliate debt were classified as available-for-sale securities as assets in the balance sheet and were recorded at fair value with unrealized gains or losses recorded in other comprehensive income. EFIH evaluated its investment in affiliate debt for impairment and recorded an impairment loss if declines in fair value were deemed to be other than temporary, which occurred if it determined it would be unable to recover the carrying value of the investment. Impairments were accounted for as a reduction of interest income if related to the issuer's credit. If they were not related to the issuer's credit, the impairments were recorded in other comprehensive income.
	Impairment of Equity Method Investments
	EFIH evaluates its investment in Oncor Holdings when factors indicate that a decrease in the value of the investment has occurred that is not temporary. Indications of a loss in value include recurring operating losses of the investee or fair value measures that are less than carrying value. An impairment loss is recognized if the carrying value of the investment is greater than the fair value of the investment, and the loss is not deemed temporary. Fair value is determined primarily by discounted cash flows, supported by available market valuations, if applicable.
	Fair Value of Nonderivative Financial Instruments
	The carrying amounts of financial assets classified as current assets and the carrying amounts of financial liabilities classified as current liabilities approximate fair value due to the short maturity of such balances, which include cash equivalents and receivables from affiliates.
	Cash and Cash Equivalents
	For purposes of reporting cash and cash equivalents, temporary cash investments purchased with a remaining maturity of three months or less are considered to be cash equivalents.
	Push-Down of EFH Corp. Debt
	In accordance with SEC Staff Accounting Bulletin (SAB) Topic 5-J, EFIH reflects amounts of certain EFH Corp. 10.875% Notes and EFH Corp. Toggle Notes on its balance sheet and the related interest expense in its income statement. The amounts reflected on EFIH's balance sheet were calculated based upon the relative equity investment of EFCH and EFIH in their respective operating subsidiaries at the time of the Merger (see Note 6).

Subsequent_Event_Bankruptcy_Fi

Subsequent Event - Bankruptcy Filing	12 Months Ended
	Dec. 31, 2013
Reorganizations [Abstract]	'
Subsequent Event b Bankruptcy Filing	'
	SUBSEQUENT EVENT - BANKRUPTCY FILING
	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). During the pendency of the Bankruptcy Filing (the Chapter 11 Cases), the Debtors will operate their businesses as "debtors-in-possession" under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code.
	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 remaining natural gas hedges that TCEH entered into when forward market prices of natural gas were significantly higher than current prices mature in 2014. 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 to refinance and/or extend the maturities of their outstanding debt.
	EFIH's sources of liquidity include interest on holdings of EFH Corp. and TCEH debt securities as well as loans/advances from EFH Corp. In consideration of the liquidity matters of EFH Corp.'s competitive operations and the resulting uncertainty of EFIH's ability to meet interest payments as they become due in the near term, there arose substantial doubt as to EFIH's ability to continue as a going concern without a restructuring of its debt.
	In consideration of the liquidity matters discussed above, the report of EFIH's independent registered public accounting firm that accompanies its audited consolidated financial statements for the year ended December 31, 2013 included in this annual report contains an explanatory paragraph regarding the substantial doubt about EFIH's ability to continue as a going concern. The Bankruptcy Filing also constituted a default of EFIH's debt.
	In 2013, EFH Corp. began to engage in discussions with certain creditors, including EFIH creditors, with respect to proposed changes to its capital structure, including the possibility of a consensual, prepackaged restructuring transaction. Because of the recent constructive nature of these discussions, TCEH elected not to make interest payments due in April 2014 totaling $123 million on certain debt obligations. Under the terms of the debt obligations that apply to the substantial majority of the missed interest payments, the lenders had the right to accelerate the payment of the debt if TCEH had not cured the default after an applicable grace period. In anticipation of the Bankruptcy Filing, on April 29, 2014, the Debtors entered into a Restructuring Support and Lock-Up Agreement (the Restructuring Support and Lock-Up Agreement) with various stakeholders in order to effect an agreed upon restructuring of the Debtors through a pre-arranged Chapter 11 plan of reorganization (the Restructuring Plan).
	Restructuring Support and Lock-Up Agreement
	General
	In anticipation of the Bankruptcy Filing, on April 29, 2014, the Debtors, Texas Holdings and its general partner Texas Energy Future Capital Holdings LLC (TEF and, together with Texas Holdings, the Consenting Interest Holders) and the Consenting Creditors entered into the Restructuring Support and Lock-Up Agreement in order to effect an agreed upon restructuring of the Debtors through the Restructuring Plan.
	Pursuant to the Restructuring Support and Lock-Up Agreement, the Consenting Interest Holders and Consenting Creditors agreed, subject to the terms and conditions contained in the Restructuring Support and Lock-Up Agreement, to support the Debtors’ proposed financial restructuring (the Restructuring Transactions), and further agreed to limit certain transfers of any ownership (including any beneficial ownership) in the equity interests of or claims held against the Debtors, including any such interests or claims acquired after executing the Restructuring Support and Lock-Up Agreement.
	Material Restructuring Terms
	The Restructuring Support and Lock-Up Agreement along with the accompanying term sheet sets forth the material terms of the Restructuring Transactions pursuant to which, in general:
	TCEH First Lien Secured Claims
	As a result of the Restructuring Transactions, holders of TCEH first lien secured claims will receive, among other things, their pro rata share of (i) 100% of the equity of TCEH consummated through a tax-free spin (in accordance with the Private Letter Ruling described below) in connection with TCEH's emergence from bankruptcy (Reorganized TCEH) and (ii) all of the net cash from the proceeds of the issuance of new long-term secured debt of Reorganized TCEH.
	TCEH Unsecured Claims
	As a result of the Restructuring Transactions, holders of general unsecured claims against EFCH, TCEH and its subsidiaries (including TCEH first lien deficiency claims, TCEH second lien claims and TCEH unsecured note claims) will receive their pro rata share of the unencumbered assets of TCEH.
	EFIH First Lien and EFIH Second Lien Settlements
	Certain holders of each of the EFIH 6.875% Notes and EFIH 10% Notes (such holders, the EFIH First Lien Note Parties) have agreed to voluntary settlements with respect to EFIH's and EFIH Finance's obligations under the EFIH First Lien Notes held by the EFIH First Lien Note Parties. Under the terms of the settlement, each EFIH First Lien Note Party has agreed to accept as payment in full of any claims arising out of its EFIH First Lien Notes an amount of loans under the EFIH First Lien DIP Facility (as discussed in Note 6) equal to the greater of (a) 105% of the principal amount on the EFIH First Lien Notes plus 101% of the accrued and unpaid interest at the non-default rate on such principal (which amount will be deemed to include the original issue discount) and (b) 104% of the principal amount of, plus accrued and unpaid interest at the non-default rate on, the EFIH First Lien Notes, in each case held by such EFIH First Lien Note Party. In addition, in the case of (b) above, each EFIH First Lien Note Party will be entitled to original issue discount paid in accordance with the EFIH First Lien Facility. No EFIH First Lien Note Party will receive any other fees, including commitment fees, paid in respect of the EFIH First Lien DIP Facility (such settlement, the EFIH First Lien Settlement).
	Certain holders of each of the EFIH 11% Notes and EFIH 11.75% Notes (such holders, the EFIH Second Lien Note Parties) have agreed to voluntary settlements with respect to EFIH's and EFIH Finance's obligations under the EFIH Second Lien Notes held by the EFIH Second Lien Note Parties. Under the terms of the settlement, each EFIH Second Lien Note Party has agreed to accept as payment in full of any claims arising out of its EFIH Second Lien Notes, its pro rata share of an amount in cash equal to (i) 100% of the principal of EFIH Second Lien Notes held by such EFIH Second Lien Party plus (ii) 50% of the aggregate amount of any claim derived from or based upon make-whole or other similar provisions under the EFIH 11% Notes or EFIH 11.75% Notes (such settlement, the EFIH Second Lien Settlement).
	As part of the EFIH Second Lien Settlement, a significant EFIH Second Lien Note Party, but not other EFIH Second Lien Note Parties, will have the right to receive up to $500 million of its payment under the EFIH Second Lien Settlement in the form of loans under the EFIH First Lien DIP Facility.
	During the early portion of the Chapter 11 Cases, EFIH expects to 1) solicit agreement to and participation in each of the EFIH First Lien Settlement and EFIH Second Lien Settlements from holders of the remaining respective first and second lien notes and 2) initiate litigation to obtain entry of an order from the Bankruptcy Court disallowing the claims of any non-settling holders of the EFIH First Lien Notes and EFIH Second Lien Notes from or based on make-whole or other similar provisions under the respective notes. Following the completion of these solicitations, Non-Settling EFIH First Lien Holders and Non-Settling EFIH Second Lien Note Holders will receive their respective pro rata shares of cash from the proceeds of the EFIH First Lien DIP and EFIH Second Lien DIP Facilities (as described in Note 6).
	EFIH Second Lien DIP Notes Offering
	During the early portion of the Chapter 11 Cases, EFIH and EFIH Finance expect to offer (the EFIH Second Lien DIP Notes Offering) to all holders of EFIH Unsecured Notes and a significant EFIH Second Lien Note Party the right to purchase $1.9 billion aggregate principal amount of 8% Mandatorily Convertible Second Lien Subordinated Secured DIP Financing Notes due 2016.
	Backstop Commitment
	In connection with the execution of the Restructuring Support and Lock-Up Agreement, certain holders of the EFIH Unsecured Notes (the Backstop Parties) have entered into a commitment letter with EFH Corp. and EFIH, dated April 29, 2014 (the Commitment Letter), pursuant to which such holders have committed, severally and not jointly, up to $2.0 billion in available funds (the Backstop Commitment) to purchase EFIH Second Lien DIP Notes. Any EFIH Second Lien DIP Notes not sold in the EFIH Second Lien DIP Notes Offering and the concurrent offering (unpurchased notes) will be purchased by the Backstop Parties, pro rata in proportion to their respective share of the Backstop Commitment. If any Backstop Party fails to satisfy its obligation to purchase its pro rata share of the unpurchased notes, the other Backstop Parties would have the right, but not the obligation, to purchase such unpurchased notes. The obligations under the Commitment Letter are not subject to the approval of the Oncor TSA Amendment (as described below) by the Bankruptcy Court.
	Under the Commitment Letter and in consideration of the Backstop Commitment, EFIH agreed to pay the Backstop Parties fees consisting of (i) $40 million execution and approval fees payable at various milestones within the bankruptcy process and (ii) a fee equal to $100 million payable in the form of Non-Interest Bearing Mandatorily Convertible Second Lien Subordinated Secured DIP Financing Tranche B Notes due 2016 (EFIH Second Lien DIP Tranche B Notes) to be paid concurrently with the consummation of the EFIH Second Lien DIP Notes Offering. Other than with respect to the requirement not to pay interest and related mechanics and not trading together with any other debt, the EFIH Second Lien DIP Tranche B Notes are expected to have the same terms and conditions as the EFIH Second Lien DIP Notes.
	In the event the EFIH Second Lien DIP Notes are repaid in cash prior to the effective date of the plan of reorganization (Effective Date), EFIH agreed to pay the Backstop Parties a termination fee of $380 million. In addition, if the EFIH Second Lien DIP Notes Offering is not consummated at the option of EFIH, EFIH agreed to pay the Backstop Parties a break-up fee of $60 million.
	EFIH Unsecured Claims and EFH Corp. Unsecured Claims
	On the Effective Date, all of the EFIH Unsecured Notes and EFH Corp. Unsecured Notes will be canceled. In full satisfaction of the claims under the EFIH Unsecured Notes and the EFH Corp. Unsecured Notes, (i) each holder of EFIH Unsecured Notes will receive its pro rata share of 98.0% of the equity interests of newly reorganized EFH Corp. (Reorganized EFH Corp.) (subject to dilution by the Equity Conversion as described below) and (ii) each holder of EFH Corp. Unsecured Notes will receive its pro rata share of 1.0% of the equity interests of Reorganized EFH Corp. (subject to dilution by the Equity Conversion).
	Holders of the EFH Corp. Unsecured Notes will also receive on the Effective Date their pro rata share of either (A) if the Oncor TSA Amendment (described below) has then been approved, (1) $55 million in cash from EFIH, provided, however, that if the Oncor tax payments received by EFIH under the Oncor TSA Amendment through the Effective Date are less than 80% of projected amounts, the $55 million payment will be reduced on a dollar for dollar basis by the amount of such shortfall, and (2) cash on hand at EFH Corp. (not including the settlement payment in clause (1) hereof); or (B) if the Oncor TSA Amendment has not then been approved, all assets of EFH Corp., including cash on hand but excluding the equity interests in EFIH.
	EFH Corp. Equity Interests
	On the Effective Date, all of the equity interests in EFH Corp. (EFH Corp. Interests) will be canceled. In full satisfaction of the claims under the EFH Corp. Interests, each holder of EFH Corp. Interests will receive its pro rata share of 1.0% of the equity interests of Reorganized EFH Corp. (subject to dilution by the Equity Conversion).
	Equity Conversion
	On the Effective Date, the EFIH Second Lien DIP Notes will automatically convert (Equity Conversion) on a pro rata basis into approximately 64% of the equity interests of Reorganized EFH Corp.
	Oncor TSA Amendment
	The Restructuring Support and Lock-Up Agreement provides that the Debtors will request authority from the Bankruptcy Court to amend, or otherwise assign the right to payments under, the Oncor Tax Sharing Agreement (the Oncor TSA Amendment) to provide that any payment required to be made to EFH Corp. under the Oncor Tax Sharing Agreement after March 31, 2014, will instead be made to EFIH. Any tax payments received by EFH Corp. before the Bankruptcy Court enters or denies an order authorizing the Oncor TSA Amendment will be deposited by EFH Corp. into a segregated account until the earlier of (i) the date the Bankruptcy Court enters the order authorizing the Oncor TSA Amendment, in which case such amounts will be remitted to EFIH, or (ii) the date the Bankruptcy Court denies authorization of the Oncor TSA Amendment, in which case such amounts will be remitted to EFH Corp.
	The Oncor TSA Amendment will automatically terminate and be of no further force and effect in the event that the Commitment Letter is terminated by the Backstop Parties; provided, however, that any amounts that were paid to EFIH in accordance with the Oncor TSA Amendment before its termination will be retained by EFIH if the Commitment Letter terminates or the EFIH Second Lien DIP Facility is not fully funded in accordance with its terms (i.e., except as a result of a breach by the Backstop Parties). Neither EFH Corp. nor EFIH will have the right to terminate or modify the Oncor TSA Amendment during the Chapter 11 Cases if the EFIH Second Lien DIP Facility is consummated.
	If the Bankruptcy Court has not approved the Oncor TSA Amendment within 90 days after the Petition Date, the interest rate on the EFIH Second Lien DIP Tranche A-1 Notes, EFIH Second Lien DIP Tranche A-2 Notes and EFIH Second Lien DIP Tranche A-3 Notes will increase by 4.0% with such additional interest to be paid-in-kind (compounded quarterly) until such approval is received from the Bankruptcy Court. If the Bankruptcy Court has not approved the Oncor TSA Amendment by May 1, 2015, each holder of EFIH Second Lien DIP Notes will receive additional EFIH Second Lien DIP Notes equal to 10.0% of the amount of EFIH Second Lien DIP Notes held by such holder.
	Private Letter Ruling
	The Restructuring Support and Lock-Up Agreement provides that EFH Corp. will file 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, (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.
	There are various conditions precedent to the restructuring transactions under the Restructuring Support and Lock-Up Agreement including, but not limited to the receipt of the Private Letter Ruling, requisite regulatory approvals and orders from the Bankruptcy Court.
	Operation and Implications of the Chapter 11 Cases
	Subject to certain exceptions, under the Bankruptcy Code, the Bankruptcy Filing automatically enjoined, or stayed, the continuation of most judicial or administrative proceedings or filing of other actions against the Debtors or their property to recover, collect or secure a claim arising prior to the Petition Date. Accordingly, although the Bankruptcy Filing triggered defaults on the Debtors' debt obligations, creditors are stayed from taking any actions against the Debtors as a result of such defaults, subject to certain limited exceptions permitted by the Bankruptcy Code. Absent an order of the Bankruptcy Court, substantially all of the Debtors' prepetition liabilities are subject to settlement under the Bankruptcy Code.
	Following the Petition Date, the Debtors intend to seek approval from the Bankruptcy Court to pay or otherwise honor certain prepetition obligations generally designed to stabilize their operations. These obligations relate to certain employee wages and benefits, taxes, certain customer programs and certain obligations to vendors and hedging and trading counterparties. The Debtors intend to continue paying claims arising after the Petition Date in the ordinary course of business.
	The Debtors have retained, pursuant to Bankruptcy Court approval, legal and financial professionals to advise them in connection with the Chapter 11 Cases and certain other professionals to provide services and advice in the ordinary course of business. From time to time, the Debtors may seek Bankruptcy Court approval to retain additional professionals. The Debtors have incurred and expect to continue to incur significant costs associated with the Chapter 11 Cases and our reorganization, but we cannot accurately predict the effect the Chapter 11 Cases will have on our liquidity, operations, financial position and results of operations.
	The accompanying consolidated financial statements contemplate the realization of assets and the satisfaction of liabilities in the normal course of business. EFIH's ability to continue as a going concern is contingent upon its ability to comply with the financial and other covenants contained in the debtor-in-possession financing (DIP Facilities, described below), the Bankruptcy Court's approval of the Restructuring Plan or another Chapter 11 plan and its ability to successfully implement the Restructuring Plan or another 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. Further, the Restructuring Plan or another Chapter 11 plan could materially change the amounts and classifications of assets and liabilities reported in EFIH's consolidated financial statements.
	Financing During the Chapter 11 Cases
	As discussed in Note 6, EFIH intends to file motions with the Bankruptcy Court for approval of the EFIH DIP Facilities. The EFIH First Lien DIP Facility provides for $5.4 billion in senior secured, super-priority financing. The EFIH Second Lien DIP Facility provides for $1.9 billion in secured, super-priority financing.
	Chapter 11 Plan
	A Chapter 11 plan (including the Restructuring Plan) determines the rights and satisfaction of claims of various creditors and security holders and is subject to the ultimate outcome of negotiations and Bankruptcy Court decisions ongoing through the date on which the Chapter 11 plan is confirmed. The Debtors currently expect that any proposed Chapter 11 plan (including the Restructuring Plan) will provide, among other things, mechanisms for settlement of claims against the Debtors' estates, treatment of EFH Corp.'s existing equity holders and the Debtors' respective existing debt holders, potential income tax liabilities and certain corporate governance and administrative matters pertaining to a reorganized EFH Corp. and EFIH. Any proposed Chapter 11 plan will (and the Restructuring Plan may) be subject to revision prior to submission to the Bankruptcy Court based upon discussions with the Debtors' creditors and other interested parties, and thereafter in response to creditor claims and objections and the requirements of the Bankruptcy Code or the Bankruptcy Court. There can be no assurance that the Debtors will be able to secure approval for the Restructuring Plan or any other Chapter 11 plan from the Bankruptcy Court or that any Chapter 11 plan will be accepted by the Debtors' creditors.
	In order for the Debtors to emerge successfully from the Chapter 11 Cases as reorganized companies, they must obtain approval from the Bankruptcy Court and certain of their respective creditors for a Chapter 11 plan, which will enable each of the Debtors to transition from the Chapter 11 Cases into reorganized companies conducting ordinary course operations outside of bankruptcy. In connection with an exit from bankruptcy, EFIH will require a new credit facility, or "exit financing." EFIH's ability to obtain such approval, and EFIH's ability to obtain such financing will depend on, among other things, the timing and outcome of various ongoing matters in the Chapter 11 Cases.
	Regulatory Requirements Related to the Bankruptcy Filing — Pursuant to the Bankruptcy Code, the Debtors intend to comply with all applicable regulatory requirements, including all requirements related to environmental and safety law compliance, during the pendency of the Chapter 11 Cases. In addition, the Debtors will seek all necessary and appropriate regulatory approvals necessary to consummate any transactions proposed in the Chapter 11 plan. Moreover, to the extent the Debtors either maintain insurance policies or self-insure their regulatory compliance obligations, the Debtors intend to continue such insurance policies or self-insurance in the ordinary course of business.

Investment_In_Oncor_Holdings

Investment In Oncor Holdings	12 Months Ended
	Dec. 31, 2013
Investment In Oncor Holdings [Abstract]	'
Investment In Oncor Holdings	'
	INVESTMENT IN ONCOR HOLDINGS
	EFIH has an equity investment in Oncor Holdings, which holds an approximate 80% 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 (primary beneficiary). 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.
	In reaching the conclusion to deconsolidate, EFIH conducted an extensive analysis of Oncor Holdings' underlying governing documents and management structure. Oncor Holdings' unique governance structure was adopted in conjunction with the Merger, when the Sponsor Group, EFH Corp. and Oncor agreed to implement structural and operational measures to "ring-fence" (the Ring-Fencing Measures) Oncor Holdings and Oncor as discussed in Note 1. The Ring-Fencing Measures were designed to prevent, among other things, (i) increased borrowing costs at Oncor due to the attribution to Oncor of debt from any of EFH Corp.'s other subsidiaries, (ii) the activities of EFH Corp.'s competitive operations following the Merger resulting in the deterioration of Oncor's business, financial condition and/or investment in infrastructure, and (iii) Oncor becoming substantively consolidated into a bankruptcy proceeding involving any member of the Texas Holdings Group. The Ring-Fencing Measures effectively separate the daily operational and management control of Oncor Holdings and Oncor from EFH Corp. and its other subsidiaries. By implementing the Ring-Fencing Measures, Oncor maintained its investment grade credit rating following the Merger, and EFH Corp. reaffirmed Oncor's independence from its competitive businesses to the PUCT.
	EFIH determined the most significant activities affecting the economic performance of Oncor Holdings (and Oncor) are the operation, maintenance and growth of Oncor's electric transmission and distribution assets and the preservation of its investment grade credit profile. The boards of directors of Oncor Holdings and Oncor have ultimate responsibility for the management of the day-to-day operations of their respective businesses, including the approval of Oncor's capital expenditure and operating budgets and the timing and prosecution of Oncor's rate cases. While both boards include members appointed by EFH Corp., a majority of the board members are independent in accordance with rules established by the New York Stock Exchange, and therefore, EFIH concluded for purposes of applying the amended accounting standards that EFH Corp. does not have the power to control the activities deemed most significant to Oncor Holdings' (and Oncor's) economic performance.
	In assessing EFIH's ability to exercise control over Oncor Holdings and Oncor, EFIH considered whether it could take actions to circumvent the purpose and intent of the Ring-Fencing Measures (including changing the composition of Oncor Holdings' or Oncor's board) in order to gain control over the day-to-day operations of either Oncor Holdings or Oncor. EFIH also considered whether (i) it has the unilateral power to dissolve, liquidate or force into bankruptcy either Oncor Holdings or Oncor, (ii) it could unilaterally amend the Ring-Fencing Measures contained in the underlying governing documents of Oncor Holdings or Oncor, and (iii) it could control Oncor's ability to pay distributions and thereby enhance its own cash flow. EFIH concluded that, in each case, no such opportunity exists.
	The carrying value of EFIH's variable interest in Oncor Holdings totaled $5.950 billion and $5.842 billion at December 31, 2013 and December 31, 2012, respectively, and is reported as investment in Oncor Holdings in its balance sheet. EFIH's maximum exposure to loss from this investment does not exceed its carrying value.
	See Note 9 for discussion of Oncor Holdings' and Oncor's transactions with EFH Corp. and its other subsidiaries.
	Distributions from Oncor Holdings — Oncor Holdings' distributions of earnings to EFIH totaled $213 million, $147 million and $116 million for the years ended December 31, 2013, 2012 and 2011, respectively. Distributions may not be paid except to the extent Oncor maintains a required regulatory capital structure as discussed below. At December 31, 2013, $192 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.
	For the period beginning October 11, 2007 and ending December 31, 2012, distributions (other than distributions of the proceeds of any equity issuance) paid by Oncor to its members were limited by a PUCT order to an amount not to exceed Oncor's cumulative net income determined in accordance with US GAAP, as adjusted. Adjustments consisted of the removal of noncash impacts of purchase accounting and deducting two specific cash commitments. The noncash impacts consisted of removing the effect of an $860 million goodwill impairment charge in 2008 and the cumulative amount of net accretion of fair value adjustments. The two specific cash commitments were a $72 million ($46 million after tax) one-time refund to customers in September 2008 and funds spent as part of a five-year, $100 million commitment for additional energy efficiency initiatives that was completed in 2012.
	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 December 31, 2013, Oncor's regulatory capitalization ratio was 58.7% debt and 41.3% equity. The PUCT has the authority to determine what types of debt and equity are included in a utility's debt-to-equity ratio. 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).
	Oncor Holdings Financial Statements — Condensed statements of consolidated income of Oncor Holdings and its subsidiaries for the years ended December 31, 2013, 2012 and 2011 are presented below:
		Year Ended December 31,
		2013			2012			2011
	Operating revenues	$	3,552		$	3,328		$	3,118
	Operation and maintenance expenses	(1,269		)	(1,171		)	(1,097		)
	Depreciation and amortization	(814		)	(771		)	(719		)
	Taxes other than income taxes	(424		)	(415		)	(400		)
	Other income	18			26			30
	Other deductions	(15		)	(64		)	(9		)
	Interest income	4			24			32
	Interest expense and related charges	(371		)	(374		)	(359		)
	Income before income taxes	681			583			596
	Income tax expense	(259		)	(243		)	(236		)
	Net income	422			340			360
	Net income attributable to noncontrolling interests	(87		)	(70		)	(74		)
	Net income attributable to Oncor Holdings	$	335		$	270		$	286
	Assets and liabilities of Oncor Holdings at December 31, 2013 and 2012 are presented below:
		December 31,
		2013			2012
	ASSETS
	Current assets:
	Cash and cash equivalents	$	28		$	45
	Restricted cash	52			55
	Trade accounts receivable — net	385			338
	Trade accounts and other receivables from affiliates	135			53
	Income taxes receivable from EFH Corp.	16			—
	Inventories	65			73
	Accumulated deferred income taxes	32			26
	Prepayments and other current assets	82			82
	Total current assets	795			672
	Restricted cash	16			16
	Other investments	91			83
	Property, plant and equipment — net	11,902			11,318
	Goodwill	4,064			4,064
	Regulatory assets — net	1,324			1,788
	Other noncurrent assets	71			78
	Total assets	$	18,263		$	18,019
	LIABILITIES
	Current liabilities:
	Short-term borrowings	$	745		$	735
	Long-term debt due currently	131			125
	Trade accounts payable — nonaffiliates	178			121
	Income taxes payable to EFH Corp.	23			34
	Accrued taxes other than income	169			153
	Accrued interest	95			95
	Other current liabilities	135			110
	Total current liabilities	1,476			1,373
	Accumulated deferred income taxes	1,905			1,736
	Long-term debt, less amounts due currently	5,381			5,400
	Other noncurrent liabilities and deferred credits	1,822			2,023
	Total liabilities	$	10,584		$	10,532

Income_Taxes_Notes

Income Taxes (Notes)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	INCOME TAXES
	EFH Corp. files a US federal income tax return that includes the results of EFCH, EFIH, Oncor Holdings and TCEH. Oncor is a partnership for US federal income tax purposes and is not a corporate member of the EFH Corp. consolidated group.
	EFH Corp. and its subsidiaries (including EFCH, EFIH, and TCEH, but not including Oncor Holdings and Oncor) are parties to a Federal and State Income Tax Allocation Agreement, which provides for the computation of income tax liabilities and benefits, and among other things, that each of EFCH, EFIH, TCEH and any other subsidiaries under the agreement is required to make payments to EFH Corp. in an amount calculated to approximate the amount of tax liability such entity would have owed if it filed a separate corporate tax return. Accordingly, EFIH's income tax expense and related balance sheet amounts are recorded as if EFIH files its own corporate income tax returns. Deferred income taxes are provided for temporary differences between the book and tax basis of assets and liabilities as required under accounting rules. Income tax assets and liabilities related to pushed down debt are settled as membership interests transactions.
	EFH Corp., Oncor Holdings, Oncor and Oncor's third-party minority investor are parties to a separate Federal and State Income Tax Allocation Agreement, which governs the computation of federal income tax liability among such parties, and similarly provides, among other things, that each of Oncor Holdings and Oncor will pay EFH Corp. its share of an amount calculated to approximate the amount of tax liability such entity would have owed if it filed a separate corporate tax return.
	The components of EFIH's income tax expense (benefit) are as follows:
		Year Ended December 31,
		2013			2012			2011
	Current:
	US Federal	$	(115	)	$	25		$	72
	State	1			4			3
	Deferred:
	US Federal	(55		)	(2		)	(2		)
	Total income tax expense (benefit)	$	(169	)	$	27		$	73
	Reconciliation of income taxes computed at the US federal statutory rate to income tax expense (benefit) recorded:
		Year Ended December 31,
		2013			2012			2011
	Income (loss) before income taxes and equity in earnings of unconsolidated subsidiaries	$	(606	)	$	72		$	204
	Income taxes at the US federal statutory rate of 35%	(212		)	25			72
	Nondeductible reserve for tax receivable from EFH Corp.	38			—			—
	Other	5			2			1
	Income tax expense (benefit)	$	(169	)	$	27		$	73
	Effective rate	27.9		%	37.5		%	35.8		%
	Deferred Income Tax Balances
	Deferred income taxes provided for temporary differences based on tax laws in effect at December 31, 2013 and 2012 are as follows:
		December 31,
		2013									2012
		Total			Current			Noncurrent			Total		Current		Noncurrent
	Deferred Income Tax Assets:
	Accrued interest	$	3		$	—		$	3		$	5	$	—	$	5
	Debt extinguishment gains (Note 6)	49			—			49			75		—		75
	Debt fair value discount	1			—			1			—		—		—
	Total	53			—			53			80		—		80
	Deferred Income Tax Liabilities:
	Debt extinguishment gains related to pushed down debt of EFH Corp. (Note 6)	103			26			77			104		—		104
	Debt fair value discount	—			—			—			85		—		85
	Total	103			26			77			189		—		189
	Net Accumulated Deferred Income Tax Liability	$	50		$	26		$	24		$	109	$	—	$	109
	For the year ended December 31, 2013, EFIH generated a net operating loss (NOL) carryforward for federal income tax purposes of $328 million. Under the Federal and State Income Tax Allocation Agreement, EFIH had recorded a current income tax receivable from EFH Corp., which totaled $110 million at December 31, 2013, because EFH Corp. utilized the loss to offset current taxable partnership income from Oncor. See Note 5 for discussion of the reserve recorded against the income tax receivable.

Reserve_for_Income_Tax_Receiva

Reserve for Income Tax Receivable Reserve for Income Tax Receivable	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Reserve for Income Tax Receivable	'
	RESERVE FOR INCOME TAX RECEIVABLE
	On April 29, 2014, 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. At December 31, 2013, EFIH had an income tax receivable from EFH Corp. that arose under the Federal and State Income Tax Allocation Agreement, as described in Note 4, totaling $110 million. In the fourth quarter 2013, EFIH fully reserved the income tax receivable because of the significant uncertainty regarding its ultimate settlement. The charge was reported in other deductions.

Debt

Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	DEBT
	Debtor-In-Possession (DIP) Facilities
	EFIH First Lien DIP Facility — EFIH has received a binding commitment and agreements to participate, subject to certain customary conditions, for $5.4 billion first-lien DIP facility described below (the EFIH First Lien DIP Facility). EFIH intends to file a motion with the Bankruptcy Court for approval of the EFIH First Lien DIP Facility. In general, the commitment from the financial institution would terminate (unless waived by the lenders) within 10 business days from the Petition Date in the event the Bankruptcy Court has not issued an interim order approving such financing.
	The proposed EFIH First Lien DIP Facility is a Senior Secured, Super-Priority Credit Agreement by and among the EFIH Debtors, the lenders that are party thereto from time to time and an administrative and collateral agent.
	See Note 2 for further discussion regarding the Restructuring Support and Lock-Up Agreement, the EFIH First Lien Settlement and the EFIH First Lien DIP Facility.
	The principal amounts outstanding under the EFIH First Lien DIP Facility bear interest based on applicable LIBOR or base rates plus applicable margins as set forth in the EFIH First Lien DIP Facility. The EFIH First Lien DIP Facility also provides for certain additional fees payable to the agents and lenders, as well as availability fees payable with respect to any unused portions of the available EFIH First Lien DIP Facility.
	The EFIH First Lien DIP Facility will mature on the twenty-fourth month after the closing date of the EFIH First Lien DIP Facility. The maturity date may be extended to the thirtieth month after the closing date of the EFIH First Lien DIP Facility subject to the satisfaction of certain conditions, including the payment of a 25 basis points 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 the EFIH Debtors.
	EFIH's obligations under the EFIH First Lien DIP Facility will be secured by a first lien covering substantially all of EFIH's assets, rights and properties, subject to certain exceptions set forth in the EFIH First Lien DIP Facility. The EFIH First Lien DIP Facility provides that all obligations thereunder will constitute administrative expenses in the Chapter 11 Cases, with administrative priority and senior secured state under Section 364(c) and 364(d) of the Bankruptcy Code and, subject to certain exceptions set forth in the EFIH First Lien 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 First Lien DIP Facility provides for affirmative and negative covenants applicable to the EFIH Debtors, including affirmative covenants requiring the EFIH Debtors to provide financial information, budgets and other information to the agents under the EFIH First Lien DIP Facility, and negative covenants restricting the EFIH Debtors' 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 First Lien DIP Facility. EFIH's ability to borrow under the EFIH First Lien DIP Facility is subject to the satisfaction of certain customary conditions precedent set forth therein. The Oncor Ring-Fenced Entities will not be restricted subsidiaries for purposes of the EFIH First Lien DIP Facility.
	The EFIH First Lien 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 First Lien DIP Facility or ancillary loan documents, cross-defaults under other agreements or instruments and the entry of material judgments against EFIH. The EFIH First Lien DIP Facility also includes an event of default that may arise from its failure to meet a minimum liquidity test. Upon the existence of an event of default, the EFIH First Lien 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.
	EFIH Second Lien DIP Facility — The EFIH Second Lien DIP Facility provides for a secured, super-priority term loan in the amount of $1.9 billion. The proposed EFIH Second Lien DIP Facility is a Secured, Super-Priority Credit Agreement by and among the EFIH Debtors, the lenders that are party thereto from time to time and an administrative and collateral agent. On the Effective Date, the EFIH Second Lien DIP Notes will automatically convert (Equity Conversion) on a pro rata basis into approximately 64% of the equity interests of newly reorganized EFH Corp (Reorganized EFH Corp.)
	See Note 2 for further discussion of the Restructuring Support and Lock-Up Agreement, the EFIH Second Lien DIP Notes Offering and the Backstop Commitment received from certain holders of the EFIH Unsecured Notes.
	The principal amounts outstanding under the EFIH Second Lien DIP Facility bear interest based on applicable LIBOR or base rates plus applicable margins as set forth in the EFIH Second Lien DIP Facility subject to certain adjustments if the Bankruptcy Court has not approved the Oncor TSA Amendment within 90 days after the Petition Date.
	The EFIH Second Lien DIP Facility will mature on the twenty-fourth month after the closing date of the EFIH Second Lien DIP Facility.
	EFIH's obligations under the EFIH Second Lien DIP Facility will be secured by a second lien covering substantially all of EFIH's assets, rights and properties, subject to certain exceptions set forth in the EFIH Second Lien DIP Facility. The EFIH Second Lien DIP Facility provides that all obligations thereunder will constitute administrative expenses in the Chapter 11 Cases, with administrative priority and senior secured state under Section 364(c) and 364(d) of the Bankruptcy Code and, subject to certain exceptions set forth in the EFIH Second Lien 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 Second Lien DIP Facility provides for affirmative and negative covenants applicable to the EFIH Debtors, including affirmative covenants requiring the EFIH Debtors to provide financial information, budgets and other information to the agents under the EFIH Second Lien DIP Facility, and negative covenants restricting the EFIH Debtors' 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 Second Lien DIP Facility. EFIH's ability to borrow under the EFIH Second Lien DIP Facility is subject to the satisfaction of certain customary conditions precedent set forth therein. The Oncor Ring-Fenced Entities will not be restricted subsidiaries for purposes of the EFIH Second Lien DIP Facility.
	The EFIH Second Lien 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 Second Lien 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 Second Lien 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.
	Debt
	The Bankruptcy Filing constituted an event of default under the indentures governing the debt instruments listed below and those debt obligations became immediately due and payable. As a result, the accompanying consolidated balance sheet as of December 31, 2013 presents all debt classified as current. Under the Bankruptcy Code, the creditors under these debt agreements are stayed from taking any action against the Debtors as a result of the default.
	At December 31, 2013 and 2012, debt consisted of the following:
		December 31,
		2013			2012
	Debt issued by EFIH:
	6.875% Fixed Senior Secured First Lien Notes due August 15, 2017	$	503		$	503
	10% Fixed Senior Secured First Lien Notes due December 1, 2020	3,482			2,180
	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			1,304
	9.75% Fixed Senior Notes due October 15, 2019	2			141
	Unamortized premium	284			351
	Unamortized discount	(146		)	(131		)
	Total debt issued by EFIH	7,847			6,504
	Pushed down debt (a):
	9.75% EFH Corp. Fixed Senior Notes due October 15, 2019	—			57
	10% EFH Corp. Fixed Senior Notes due January 15, 2020	—			331
	10.875% EFH Corp. Fixed Senior Notes due November 1, 2017	17			32
	11.25%/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017	13			30
	Total pushed down debt	30			450
	Total debt	$	7,877		$	6,954
	________________
	(a)	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. Debt."
	Debt Related Activity in 2013
	Principal amounts of debt issued in the year ended December 31, 2013 totaled $1.564 billion. These issuances consisted of $1.302 billion of EFIH 10% Notes issued in exchanges as discussed below, $173 million of EFIH Toggle Notes issued though the PIK election, in lieu of making cash interest payments, and $89 million of EFIH Toggle Notes issued in debt exchanges as discussed below.
	EFIH Debt Exchanges and Distributions Involving EFH Corp. Debt — In exchanges in January 2013, EFIH and EFIH Finance issued $1.302 billion principal amount of EFIH 10% Senior Secured Notes due 2020 (New EFIH 10% Notes) in exchange for $1.310 billion total principal amount of EFH Corp. and EFIH senior secured notes consisting of: (i) $113 million principal amount of EFH Corp. 9.75% Senior Secured Notes due 2019 (EFH Corp. 9.75% Notes), (ii) $1.058 billion principal amount of EFH Corp. 10% Senior Secured Notes due 2020 (EFH Corp. 10% Notes), and (iii) $139 million principal amount of EFIH 9.75% Senior Secured Notes due 2019 (EFIH 9.75% Notes). The New EFIH 10% Notes have terms and conditions substantially the same as the existing EFIH 10% Notes discussed below. EFIH cancelled the EFIH notes it received in the exchanges.
	In connection with these debt exchange transactions, EFH Corp. received the requisite consents from holders of the EFH Corp. 9.75% Notes and EFH Corp. 10% Notes and EFIH received the requisite consents from holders of the EFIH 9.75% Notes to certain amendments to the respective indentures governing such notes. These amendments, among other things, (i) eliminated EFIH's pledge of its 100% ownership of the membership interests it owns in Oncor Holdings as collateral for the EFIH 9.75% Notes, (ii) made EFCH and EFIH unrestricted subsidiaries under the EFH Corp. 9.75% Notes and EFH Corp. 10% Notes, thereby eliminating EFCH's unsecured and EFIH's secured guarantees of the notes, (iii) eliminated substantially all of the restrictive covenants in the indentures and (iv) eliminated certain events of default, modified covenants regarding mergers and consolidations and modified or eliminated certain other provisions in these indentures.
	In additional exchanges in January 2013, EFIH and EFIH Finance issued $89 million principal amount of additional 11.25%/12.25% Toggle Notes due 2018 (EFIH Toggle Notes) in exchange for $95 million total principal amount of EFH Corp. senior notes consisting of: (i) $31 million principal amount of EFH Corp. 10.875% Senior Notes due 2017 (EFH Corp. 10.875% Notes), (ii) $33 million principal amount of EFH Corp. 11.25%/12.00% Senior Toggle Notes due 2017 (EFH Corp. Toggle Notes), (iii) $2 million principal amount of EFH Corp. 5.55% Series P Notes due 2014 (EFH Corp. 5.55% Notes) and (iv) $29 million principal amount of EFH Corp. 6.50% Series Q Notes due 2024 (EFH Corp. 6.50% Notes). The additional EFIH Toggle Notes have the same terms and conditions as the existing EFIH Toggle Notes discussed below.
	In the first quarter 2013, EFIH distributed to EFH Corp. $6.360 billion principal amount of EFH Corp. debt that it previously received in debt exchanges, including $1.235 billion received in January 2013. EFH Corp. cancelled the notes, leaving $1.361 billion principal amount of affiliate debt still held by EFIH. The distribution included $3.474 billion principal amount of EFH Corp. Toggle Notes, $1.715 billion principal amount of EFH Corp. 10.875% Notes, $1.058 billion principal amount of EFH Corp. 10% Notes and $113 million principal amount of EFH Corp. 9.75% Notes.
	Accounting and Income Tax Effects of the January 2013 Debt Exchanges — In consideration of the circumstances and terms of the exchanges, accounting rules require that the net loss on the exchanges, which totaled $21 million, be deferred and amortized to interest expense over the life of the debt issued. The deferred loss is reported as debt discount associated with the EFIH 10% Notes and EFIH Toggle Notes. The deferred loss and the related deferred tax liability were pushed down to EFIH as a membership interests transaction.
	Debt Related Activity in 2012
	Principal amounts of debt issued in the year ended December 31, 2012 totaled $3.557 billion. These issuances consisted of $1.750 billion of EFIH 11.75% Notes as discussed below, $1.304 billion of EFIH Toggle Notes issued in exchanges as discussed below and $503 million of EFIH 6.875% Notes as discussed below.
	Issuance of EFIH Toggle Notes in Exchange for EFH Corp. Debt — In exchanges in December 2012, EFIH and EFIH Finance issued $1.304 billion principal amount of EFIH Toggle Notes in exchange for $1.761 billion total principal amount of EFH Corp. debt consisting of $234 million of EFH Corp. 5.55% Notes, $510 million of EFH Corp. 6.50% Notes, $453 million of EFH Corp. 6.55% Series R Senior Notes due 2034 (EFH Corp. 6.55% Notes), $132 million of EFH Corp. 10.875% Notes and $432 million of EFH Corp. Toggle Notes.
	In connection with the debt exchange transactions, EFH Corp. received the requisite consents from holders of the EFH Corp. 6.50% Notes and EFH Corp. 6.55% Notes applicable to certain amendments to the respective indentures governing such notes. These amendments, among other things, eliminated substantially all of the restrictive covenants, eliminated certain events of default, modified covenants regarding mergers and consolidations and modified or eliminated certain other provisions in such indentures, including the limitation on the incurrence of secured indebtedness.
	In the fourth quarter 2012, EFIH distributed to EFH Corp. $158 million principal amount ($160 million carrying amount) of EFH Corp. debt that it previously received in debt exchanges. EFH Corp. cancelled the notes. The distribution included $119 million principal amount of EFH Corp. Toggle Notes and $39 million principal amount of EFH 10.875% Notes.
	Accounting and Income Tax Effects of the December 2012 Debt Exchanges — In consideration of the circumstances and terms of the exchanges, accounting rules require that the gain on the exchanges, which totaled $336 million, be deferred and amortized to interest income over the life of the debt issued. The deferred gain is reported as debt premium associated with the EFIH Toggle Notes. The deferred gain and the related deferred tax asset were pushed down to EFIH as a membership interests transaction.
	Issuances of EFIH 6.875% Senior Secured Notes — In October 2012, EFIH and EFIH Finance issued $253 million principal amount of 6.875% Senior Secured Notes due 2017 (EFIH 6.875% Notes). The offering was issued at a premium of $8 million, which will be amortized to interest expense over the life of the notes. In August 2012, EFIH and EFIH Finance issued $250 million principal amount of EFIH 6.875% Notes and $600 million principal amount of 11.75% Senior Secured Second Lien Notes due 2022 (EFIH 11.75% Notes). The EFIH 11.75% Notes are discussed further below. Of the net proceeds from the August 2012 issuances, $680 million was placed in escrow (and was reported as restricted cash in the balance sheet) and was issued as a distribution to EFH Corp. in January 2013, and EFH Corp. used the distribution and cash on hand to repay the balance of the TCEH Demand Notes, which totaled $698 million at December 31, 2012. Remaining proceeds from the August and October 2012 issuances were used for general corporate purposes.
	Issuances of EFIH 11.75% Senior Secured Second Lien Notes — In February and August 2012, EFIH and EFIH Finance issued $1.150 billion and $600 million principal amount of EFIH 11.75% Notes, respectively. The February 2012 offerings were issued at a discount of $12 million, and the August 2012 offering was issued at a premium of $14 million, both of which will be amortized to interest expense over the life of the notes. The net proceeds from the February 2012 issuance were used to pay a $950 million distribution to EFH Corp., and the balance was retained as cash on hand. EFH Corp. used proceeds from the distribution to repay a portion of the demand notes payable by EFH Corp. to TCEH. Use of proceeds from the August 2012 issuance is discussed above in connection with the issuance of EFIH 6.875% Notes.
	Guarantees and Push Down of EFH Corp. 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.
	As a result of transactions in the first quarter 2013 discussed above and in Note 8, debt guaranteed and subject to push down at December 31, 2013 totals $60 million and consists of $33 million principal amount of EFH Corp. 10.875% Senior Notes and $27 million principal amount of EFH Corp. 11.25%/12.00% Senior Toggle Notes. The amount reflected in EFIH's balance sheet as pushed down debt ($30 million and $450 million at December 31, 2013 and December 31, 2012, respectively, 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.
	Payments of interest by EFH Corp. on debt pushed down totaled $23 million, $53 million and $60 million in the years ended December 31, 2013, 2012 and 2011, respectively.
	The following table presents an analysis of the total outstanding principal amount of EFH Corp. debt guaranteed by EFCH and EFIH at December 31, 2012 and December 31, 2013, respectively.
			31-Dec-12
	Securities Guaranteed (principal amounts)		Held by EFIH			Subject to Push Down		Not Merger-Related		Total Guaranteed		Debt Cancelled in 2013 (c)		Total Guaranteed December 31, 2013 (d)
EFH Corp. 9.75% Senior Notes (a)		$	—		$	115	$	—	$	115	$	113	$	—
EFH Corp. 10% Senior Notes (a)		—			661		400		1,061		1,058		—
EFH Corp. 10.875% Senior Notes		1,685			64		—		1,749		1,715		33
EFH Corp. 11.25%/12.00% Senior Toggle Notes		3,441			60		—		3,501		3,474		27
Subtotal		$	5,126		$	900	$	400	6,426		$	6,360	60
TCEH Demand Notes (b)									698				—
Total									$	7,124			$	60
________________
(a)	As a result of transactions completed in the first quarter 2013, as discussed above, the guarantees of the EFH Corp. 9.75% Notes and EFH Corp. 10% Notes were eliminated.
(b)	The TCEH Demand Notes were settled in January 2013. See Note 9.
(c)	See Note 8 for discussion of debt distributions and cancellations.
(d)	These amounts are subject to push down.
Information Regarding Other Significant Outstanding Debt
EFIH 6.875% Senior Secured Notes — At December 31, 2013, the principal amount of the EFIH 6.875% Notes totaled $503 million. These notes have a maturity date in August 2017, with interest payable in cash semiannually in arrears on February 15 and August 15 at a fixed rate of 6.875% per annum. The EFIH 6.875% Notes are 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.
The EFIH 6.875% Notes are senior obligations of EFIH and rank equally in right of payment with all senior indebtedness of EFIH and are senior in right of payment to any future subordinated indebtedness of EFIH. The EFIH 6.875% Notes are effectively senior to all second lien and unsecured indebtedness of EFIH, to the extent of the value of the EFIH Collateral, and are 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 are 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 vote as a separate class from the holders of the EFIH 10% Notes.
There currently are no restricted subsidiaries under the indenture related to the EFIH 6.875% Notes (other than EFIH Finance, which has no assets). Oncor Holdings, the immediate parent of Oncor, and its subsidiaries are unrestricted subsidiaries under the indenture and, accordingly, are not subject to any of the restrictive covenants in the indenture.
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 Notes — At December 31, 2013, the principal amount of the EFIH 10% Notes totaled $3.482 billion. The notes have a maturity date in December 2020, with interest payable in cash semiannually in arrears on June 1 and December 1 at a fixed rate of 10% per annum. The notes are secured by the EFIH Collateral on an equal and ratable basis with the EFIH 6.875% Notes.
The EFIH 10% Notes are senior obligations of EFIH and rank equally in right of payment with all existing and future senior indebtedness of EFIH, including the EFIH 6.875% Notes. The EFIH 10% Notes have substantially the same terms as the EFIH 6.875% Notes. The holders of the EFIH 10% Notes vote 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 will increase by an additional 25 basis points (to 10.50%) on April 30, 2014.
EFIH 11% Senior Secured Second Lien Notes — At December 31, 2013, the principal amount of the EFIH 11% Notes totaled $406 million. The notes have a maturity date in October 2021, with interest payable in cash semiannually in arrears on May 15 and November 15 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 — At December 31, 2013, the principal amount of the EFIH 11.75% Notes totaled $1.750 billion. These notes have a maturity date in March 2022, with interest payable in cash semiannually in arrears on March 1 and September 1 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 — At December 31, 2013, the principal amount of the EFIH Toggle Notes totaled $1.566 billion. These notes have a maturity date in December 2018, with interest payable semiannually in arrears on June 1 and December 1 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 2013 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, the creditors are stayed from taking any actions against the Debtors as a result of such defaults.
EFIH Collateral Trust Agreement — EFIH entered into a Collateral Trust Agreement, among EFIH, The Bank of New York Mellon Trust Company, N.A., as First Lien Trustee, the other Secured Debt Representatives named therein and the Collateral Trustee. The Collateral Trust Agreement governing the pledge of collateral generally provides that the holders of a majority of the debt secured by a first priority lien on the collateral, including the notes and other future debt incurred by EFH or EFIH secured by the collateral equally and ratably, have, subject to certain limited exceptions, the exclusive right to manage, perform and enforce the terms of the security documents securing the rights of secured debt holders in the collateral, and to exercise and enforce all privileges, rights and remedies thereunder.
Fair Value of Debt
At December 31, 2013 and December 31, 2012, the estimated fair value of EFIH's debt (including pushed down debt) totaled $7.849 billion and $7.258 billion, respectively, and the carrying amount totaled $7.877 billion and $6.954 billion, respectively. EFIH determines fair value in accordance with accounting standards and at December 31, 2013 its debt fair value represents Level 2 valuations. EFIH obtains security pricing from a vendor 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.

Commitments_And_Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments And Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	Guarantees
	See Note 6 for discussion of EFIH's guarantees of certain EFH Corp. 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.

Membership_Interests

Membership Interests	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Membership Interests	'
	MEMBERSHIP INTERESTS
	Cash Distributions
	In January 2013, EFIH's board of directors declared, and EFIH paid, a cash distribution to EFH Corp. of $680 million (which as of December 31, 2012 was recorded as restricted cash), which was used by EFH Corp. to settle the TCEH Demand Notes (see Note 9).
	In February 2012, EFIH's board of directors declared, and EFIH paid, a cash distribution to EFH Corp. of $950 million, which was used by EFH Corp. to partially settle the TCEH Demand Notes. EFIH did not declare or pay any cash distributions for the year ended December 31, 2011.
	Distribution Restrictions
	The indentures governing the EFIH Notes include covenants that, among other things and subject to certain exceptions, have restricted EFIH's ability to pay dividends or make other distributions with respect to its membership interests. Accordingly, EFIH's net income has been restricted from being used to make distributions with respect to its membership interests unless such distributions were expressly permitted under the indentures. The indentures further restricted EFIH from making any distribution to EFH Corp. for the ultimate purpose of making a dividend on EFH Corp.'s common stock unless at the time, and after giving effect to such distribution, its consolidated leverage ratio was equal to or less than 6.0 to 1.0. Under the indentures governing the EFIH Notes, the term "consolidated leverage ratio" is defined as the ratio of EFIH's consolidated total debt (as defined in the indentures) to EFIH's Adjusted EBITDA on a consolidated basis, including Oncor Holdings and its subsidiaries. EFIH's consolidated leverage ratio was 7.5 to 1.0 at December 31, 2013.
	In addition, under applicable law, EFIH was prohibited from paying any distribution to the extent that immediately following payment of such distribution, it would be insolvent.
	Noncash Distributions to EFH Corp.
	See Notes 6 and "Affiliate Debt Held by EFIH" below for details of debt securities EFIH acquired in debt exchange transactions in December 2012 and January 2013 and securities returned to EFH Corp. The indentures governing EFIH's debt do not limit its ability to dividend EFH Corp. debt securities to EFH Corp. so long as EFIH received such securities in exchange for the issuance of EFIH debt.
	In October 2011, EFIH distributed to EFH Corp. $53 million aggregate principal amount of EFH Corp. Toggle Notes. EFH Corp. cancelled the notes. The distribution was recorded as a reduction of membership interests in the amount of the carrying value of the notes ($45 million).
	Equity Interests in Oncor
	At December 31, 2013, ownership of Oncor's membership interests was as follows: 80.03% held indirectly by EFH Corp., 0.22% held indirectly by Oncor's management and board of directors and 19.75% held by Texas Transmission.
	Capital Contributions
	See Notes 1 and 6 for discussion of noncash contributions from EFH Corp. related to debt pushed down to EFIH in accordance with SEC Staff Accounting Bulletin Topic 5-J.
	Affiliate Debt Held by EFIH
	As a result of debt exchanges in 2009 through 2013, EFIH held debt securities of EFH Corp. and TCEH as presented in the table below. 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. The securities are no longer marked-to-market. Interest income is no longer accrued and interest received reduces the carrying value of the securities and thus increases membership interests. Interest received in 2013 totaled $252 million. As a result of the Bankruptcy Filing, EFIH does not expect to receive further interest payments on affiliate debt securities it holds.
	Prior to December 2012, when the debt securities were reported as investment in debt of affiliates, the securities were classified as available for sale, interest was recorded in the income statement as interest income and unrealized gains or losses were recorded in other comprehensive income unless such losses were other than temporary, in which case they were recorded as impairments in net income.
	In the first quarter 2013, EFIH distributed to EFH Corp. $6.360 billion principal amount ($5.778 billion carrying amount) of EFH Corp. debt that it previously received in debt exchanges, leaving $1.361 billion principal amount of affiliate debt still held by EFIH. EFH Corp. cancelled the notes. The $6.360 billion principal amount consisted of $5.125 billion of debt held at December 31, 2012 and $1.235 billion (of the $1.266 billion) received in debt exchanges in January 2013 (see Note 6). The distribution included $1.715 billion principal amount of EFH Corp. 10.875% Notes, $3.474 billion principal amount of EFH Corp. Toggle Notes, $1.058 billion principal amount of EFH Corp. 10% Notes and $113 million principal amount of EFH Corp. 9.75% Notes.
	In the fourth quarter 2012, EFIH distributed to EFH Corp. $158 million principal amount ($160 million carrying amount) of EFH Corp. debt that it previously received in debt exchanges. EFH Corp. cancelled the notes. The distribution included $119 million principal amount of EFH Corp. Toggle Notes and $39 million principal amount of EFH 10.875% Notes.
	The principal amounts, coupon rates, maturities and carrying value of holdings of debt of affiliates are as follows:
		31-Dec-13						31-Dec-12
		Principal Amount			Carrying Value			Principal Amount			Carrying Value
	EFH Corp. 10.875% Fixed Senior Notes due November 1, 2017	$	—		$	—		$	1,685		$	1,502
	EFH Corp. 11.25%/12.00% Senior Toggle Notes due November 1, 2017	—			—			3,441			3,108
	EFH Corp. 5.55% Fixed Senior Notes Series P due November 15, 2014	281			185			279			197
	EFH Corp. 6.50% Fixed Senior Notes Series Q due November 15, 2024	545			249			516			260
	EFH Corp. 6.55% Fixed Senior Notes Series R due November 15, 2034	456			194			456			221
	TCEH 10.25% Fixed Senior Notes due November 1, 2015 (both periods include $48 million principal amount of Series B Notes)	79			7			79			13
	Total	$	1,361		635			$	6,456		5,301
	Accrued interest receivable				—						87
	Balance reported as reduction in membership interests				$	635					$	5,388
	As a result of the distribution of all the EFH Corp. 10.875% Notes and EFH Corp. Toggle Notes EFIH held, EFIH recorded a gain of $284 million (pretax) representing the reclassification to interest income of mark-to-market gains previously recorded in accumulated other comprehensive income (AOCI).
	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.
	Pursuant to the terms of the Restructuring Support Agreement, the affiliate debt is expected to be cancelled in connection with the Restructuring Plan.
	Impairments — In 2012, EFIH deemed the declines in values of the TCEH securities were other than temporary and recorded a $14 million impairment, which is reported as a reduction of interest income. EFIH considered that the securities were in a loss position for an extended period and the effects of low wholesale power prices on the profitability and cash flows of TCEH (which has below investment grade credit ratings) were unlikely to reverse in the near term. In 2011, EFIH deemed the declines in values of EFH Corp. and TCEH securities were other than temporary and recorded a $77 million impairment recorded as a reduction of interest income. EFIH considered that the securities were in a loss position for more than 12 months and the effect of low wholesale power prices on the profitability and cash flows of EFH Corp. and TCEH (both of which have below investment grade credit ratings) were unlikely to reverse in the near term.
	Prior to December 2012, the debt securities were reported as investment in affiliate debt and EFIH determined value under the fair value hierarchy established in accounting standards. Under the fair value hierarchy, Level 2 valuations are based on evaluated prices that reflect observable market information, such as actual trade information of similar securities, adjusted for observable differences. The fair value of EFIH's investment in debt of affiliates was estimated at the lesser of either the call price or the market value as determined by broker quotes and quoted market prices for similar securities in active markets. For the periods presented, the fair values of EFIH's investment in debt of affiliates represented Level 2 valuations.
	Accumulated Other Comprehensive Income (Loss)
	The following table presents the changes to accumulated other comprehensive income (loss) for the year ended December 31, 2013.
		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
	Other comprehensive loss before reclassifications (after tax) arising in 2013	—			—			(16		)	(16		)
	Amounts reclassified from accumulated other comprehensive income (loss) and reported in:
	Interest income	—			(284		)	—			(284		)
	Equity in earnings of unconsolidated subsidiaries	2			—			—			2
	Income tax benefit	—			99			—			99
	Total amount reclassified from accumulated other comprehensive income (loss) during the period	2			(185		)	—			(183		)
	Total change during the period	2			(185		)	(16		)	(199		)
	Balance at December 31, 2013	$	(21	)	$	—		$	(18	)	$	(39	)

RelatedParty_Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related-Party Transactions	'
	The following represent EFIH's significant related-party transactions. Also see Note 2 for discussion of the Restructuring Support and Lock-up Agreement entered into in anticipation of the Bankruptcy Filing and Note 8 for a discussion of EFH Corp. and TCEH debt securities held by EFIH.
	•	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 EFH Corp.'s debt restructuring activities, and EFIH reimburses the subsidiary for the allocated costs. The allocated expense, which is reported in SG&A expenses, totaled $12 million for the year ended December 31, 2013. There was no allocation of legal and other consulting services costs for the year ended December 31, 2012.
	•	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 December 31, 2013, EFIH had a current income tax receivable from EFH Corp. totaling $110 million that was fully reserved as discussed in Note 5. EFIH's current income tax receivable from EFH Corp. totaled $1 million at December 31, 2012. EFIH's income tax refunds from EFH Corp. totaled $5 million for the year ended December 31, 2013, and income tax payments to EFH Corp. totaled $180 million and $30 million for the years ended December 31, 2012 and 2011, respectively. See discussion below in this note regarding allocation of income taxes to Oncor Holdings and Oncor under the Federal and State Income Tax Allocation Agreement.
	•	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 (P&I Note) and net borrowings for general corporate purposes (SG&A Note). 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 8.
	•	In January 2013, fees paid to Goldman, Sachs & Co. (Goldman), an affiliate of GS Capital Partners, for services related to debt exchanges totaled $2 million, described as follows: (i) Goldman acted as a dealer manager for the offers by EFIH and EFIH Finance to exchange new EFIH 10% Notes for EFH Corp. 9.75% Notes, EFH Corp. 10% Notes and EFIH 9.75% Notes (collectively, the Old Notes) and as a solicitation agent in the solicitation of consents by EFH Corp. and EFIH and EFIH Finance to amendments to the Old Notes and indentures governing the Old Notes and (ii) Goldman acted as a dealer manager for the offers by EFIH and EFIH Finance to exchange EFIH Toggle Notes for EFH Corp. 10.875% Notes and EFH Corp. Toggle Notes. See Note 6 for further discussion of these exchange offers.
	For the year ended December 31, 2012, fees paid to Goldman related to debt issuances totaled $10 million, described as follows: (i) Goldman acted as a joint book-running manager and initial purchaser in the February 2012 issuance of $1.15 billion principal amount of EFIH 11.750% Notes for which it received fees totaling $7 million; and (ii) Goldman acted as joint book-running manager and initial purchaser in the August 2012 issuance of $600 million principal amount of 11.750% Notes and $250 million principal amount of EFIH 6.875% Notes for which it received fees totaling $3 million. In the October 2012 issuance of $253 million principal amount of EFIH 6.875% Notes, Goldman acted as joint book-running manager and initial purchaser for which it was paid $1 million. A broker-dealer affiliate of KKR served as a co-manager and initial purchaser and an affiliate of TPG served as an advisor in both of these transactions, for which they each received a total of $4 million.
	•	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 6 regarding guarantees and push-down of certain EFH Corp. debt and Note 8 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 TCEH for services it provides, principally the delivery of electricity. Revenues recorded by Oncor for these services totaled $1.0 billion for each of the years ended December 31, 2013, 2012 and 2011. The fees are based on rates regulated by the PUCT that apply to all REPs. These revenues from TCEH represented 27%, 29% and 33% of Oncor Holdings' operating revenues for the years ended December 31, 2013, 2012 and 2011, respectively. Oncor Holdings' balance sheets at December 31, 2013 and 2012 reflect receivables from affiliates totaling $135 million and $53 million, respectively, consisting almost entirely of trade receivables from TCEH related to these electricity delivery fees.
	•	In August 2012, TCEH and Oncor agreed to settle at a discount two agreements related to securitization (transition) bonds issued by Oncor's bankruptcy-remote financing subsidiary in 2003 and 2004 to recover generation-related regulatory assets. Under the agreements, TCEH had been reimbursing Oncor as described immediately below. Under the settlement, TCEH paid, and Oncor received, $159 million in cash. The settlement was executed by EFIH acquiring the right to reimbursement under the agreements from Oncor and then selling these rights for the same amount to TCEH. The transaction resulted in a decrease of approximately $2 million (after tax) in Oncor's membership interests in accordance with accounting rules for related party transactions. Accordingly, the transaction resulted in a decrease of approximately $1 million (reflecting EFIH's 80% interest in Oncor) in EFIH's investment in unconsolidated subsidiary with an offsetting decrease in equity.
	Oncor collects transition surcharges from its customers to recover the transition bond payment obligations. Oncor's incremental income taxes related to the transition surcharges it collects had been reimbursed by TCEH quarterly under a noninterest bearing note payable to Oncor that was to mature in 2016. TCEH's payments on the note prior to the August 2012 settlement totaled $20 million and $39 million for the years ended December 31, 2012 and 2011, respectively.
	Under an interest reimbursement agreement, TCEH had reimbursed Oncor on a monthly basis for interest expense on the transition bonds. The remaining interest to be paid through 2016 under the agreement totaled $53 million at the August 2012 settlement date. Only the monthly accrual of interest under this agreement was reported as a receivable by Oncor. This interest income prior to the August 2012 settlement totaled $16 million and $32 million for the years ended December 31, 2012 and 2011, respectively.
	•	Oncor pays EFH Corp. subsidiaries for financial and other administrative services and shared facilities at cost. Such amounts increased reported operation and maintenance expense by $32 million, $35 million and $38 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	•	Under Texas regulatory provisions, the trust fund for decommissioning the Comanche Peak nuclear generation facility (reported on TCEH's balance sheet) 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 $16 million, $16 million and $17 million for the years ended December 31, 2013, 2012 and 2011, 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 and Texas state margin taxes substantially as if Oncor Holdings and Oncor were filing their own corporate income tax returns.
	At December 31, 2013, Oncor Holdings had a current payable to EFH Corp. related to federal and state income taxes totaling $7 million, which includes $5 million payable by Oncor. The Oncor payable at December 31, 2013 consists of a $23 million state margin tax payable net of an $18 million federal income tax receivable. At December 31, 2012, Oncor Holdings had a current payable totaling $34 million, which included $22 million payable by Oncor.
	For the year ended December 31, 2013, Oncor Holdings and Oncor made net federal and state income tax payments to EFH Corp. totaling $34 million and $90 million, respectively. The 2013 net payment from Oncor included $33 million 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. For the year ended December 31, 2012, Oncor Holdings and Oncor made net federal and state income tax payments to EFH Corp. totaling $35 million and $3 million, respectively. The 2012 net payment included a $21 million federal income tax refund paid to Oncor Holdings.
	•	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, 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 December 31, 2013 and 2012, TCEH had posted letters of credit in the amount of $9 million and $11 million, respectively, 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. Certain regulatory provisions allow for the recovery by Oncor of retiree benefit costs for all applicable former employees of EFH Corp.'s regulated predecessor integrated electric utility, which in addition to Oncor's active and retired employees consists largely of active and retired personnel engaged in TCEH's activities, related to service of those additional personnel prior to the deregulation and disaggregation of EFH Corp.'s businesses effective January 1, 2002. Accordingly, Oncor and TCEH entered into an agreement whereby Oncor assumed responsibility for applicable retiree benefit costs related to those personnel.
	In the fourth quarter 2012, EFH Corp. implemented certain amendments to its pension plan. These amendments resulted, in part, in the splitting off of the assets and liabilities under the plan associated with employees of Oncor and all retirees and terminated vested employees of EFH Corp. and its subsidiaries (including discontinued businesses) to a new plan that is sponsored and administered by Oncor (the Oncor Plan). In connection with this change, EFH Corp. fully funded the obligations being assumed by the Oncor Plan that relate to participants' benefits not recoverable by Oncor. The change is not expected to materially affect Oncor's reported results of operations, financial condition or cash flows.
	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	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]	'
Supplementary Financial Information	'
	SUPPLEMENTARY FINANCIAL INFORMATION
	Interest Income on Affiliate Securities — EFIH holds debt securities of EFH Corp. and TCEH. Prior to December 2012, when the debt securities were reported as investment in affiliate debt, the securities were classified as available for sale and interest was recorded in the income statement as interest income. 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 affiliate debt and reported as a reduction of membership interests. As a result of the December 2012 reclassification of investment in debt of affiliates to membership interests, interest received in 2013 reduced the carrying value of the securities and thus increased membership interests. See Note 8.
		Year Ended December 31,
		2013			2012			2011
	Available-for-sale securities:
	Interest received/accrued	$	—		$	232		$	178
	Accretion of purchase discount	—			92			140
	PIK interest received/accrued related to EFH Corp. Toggle Notes	—			288			308
	Mark-to-market gain reclassified from AOCI	284			—			3
	Impairments related to issuer credit	—			(14		)	(77		)
	Total interest	$	284		$	598		$	552
	Interest Expense and Related Charges
		Year Ended December 31,
		2013			2012			2011
	Interest paid/accrued	$	630		$	434		$	264
	Interest expense related to pushed down debt	6			75			78
	Interest expense on toggle notes payable in additional principal (Note 6)	176			12			—
	Amortization of debt exchange premiums	(80		)	(8		)	—
	Amortization of debt exchange discounts and issuance costs	28			13			6
	Total interest expense and related charges	$	760		$	526		$	348
	Supplemental Cash Flow Information
		Year Ended December 31,
		2013			2012			2011
	Cash payments (receipts) related to:
	Interest paid	$	619		$	352		$	257
	Interest received on investments in debt of affiliates (net of tax) (a)	—			(184		)	(184		)
	Income taxes	(5		)	180			30
	Noncash investing and financing activities:
	Receipt of additional EFH Corp. Toggle Notes in lieu of cash interest	—			344			312
	Principal amount of toggle notes issued in lieu of cash interest (Note 6)	173			—			—
	Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (net of tax) (Note 6) (b)	23			22			33
	Capital contribution related to settlement of certain income taxes payable (c)	—			—			30
	Reduction of debt pushed down from EFH Corp. (Note 6) (d)	(420		)	(282		)	(167		)
	Debt exchange transactions (e)	14			457			22
	Distribution to EFH Corp. of debt held as an investment (Note 8)	(5,778		)	160			45
	Income tax on interest received on holdings of affiliate debt (Note 8)	(88		)	—			—
	____________
	(a)	Interest received in 2013 reported as an increase in membership interests (see Note 8).
	(b)	Amounts include cash interest and EFH Toggle Notes issued through the PIK election (at 50%) (see Note 6).
	(c)	Reflects noncash settlement of certain income taxes payable arising as a result of the sale of noncontrolling interests in Oncor.
	(d)	For the year ended December 31, 2013, represents $838 million principal amount of EFH Corp. debt exchanged (at 50%). For the year ended December 31, 2012, represents $564 million principal amount of EFH Corp. debt exchanged (at 50%). See Note 6.
	(e)	For the year ended December 31, 2013 reflects: $1.302 billion of EFIH debt issued in exchange for $1.310 billion of EFH Corp. and EFIH debt and $89 million of EFIH debt issued in exchange for $95 million of EFH Corp. debt. For the year ended December 31, 2012 reflects: $1.304 billion of EFIH debt issued in exchange for $1.761 billion of EFH Corp. debt. See Note 6.

Recovered_Sheet1

Business And Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements have been prepared in accordance with US GAAP. The consolidated financial statements have been prepared as if EFIH is a going concern but do not reflect the application of ASC 852, Reorganizations. EFIH's investment in Oncor Holdings does not meet accounting standards criteria for consolidation and is accounted for under the equity method (see Note 3). All intercompany items and transactions have been eliminated in consolidation. 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. 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.
Income Taxes	'
	Income Taxes
	EFH Corp. files a US federal income tax return that includes the results of EFCH, EFIH, Oncor Holdings and TCEH. Oncor is a partnership for US federal income tax purposes and is not a corporate member of the EFH Corp. consolidated group. Deferred income taxes are provided for temporary differences between the book and tax basis of assets and liabilities as required under accounting rules.
Investment in Affiliate Debt	'
	Investment in Affiliate Debt
	Investments in affiliate debt are classified as a reduction of membership interests effective December 31, 2012 (see Note 8). Prior to December 2012, investments in affiliate debt were classified as available-for-sale securities as assets in the balance sheet and were recorded at fair value with unrealized gains or losses recorded in other comprehensive income. EFIH evaluated its investment in affiliate debt for impairment and recorded an impairment loss if declines in fair value were deemed to be other than temporary, which occurred if it determined it would be unable to recover the carrying value of the investment. Impairments were accounted for as a reduction of interest income if related to the issuer's credit. If they were not related to the issuer's credit, the impairments were recorded in other comprehensive income.
Impairment of Equity Method Investments	'
	Impairment of Equity Method Investments
	EFIH evaluates its investment in Oncor Holdings when factors indicate that a decrease in the value of the investment has occurred that is not temporary. Indications of a loss in value include recurring operating losses of the investee or fair value measures that are less than carrying value. An impairment loss is recognized if the carrying value of the investment is greater than the fair value of the investment, and the loss is not deemed temporary. Fair value is determined primarily by discounted cash flows, supported by available market valuations, if applicable.
Fair Value of Nonderivative Financial Instruments	'
	Fair Value of Nonderivative Financial Instruments
	The carrying amounts of financial assets classified as current assets and the carrying amounts of financial liabilities classified as current liabilities approximate fair value due to the short maturity of such balances, which include cash equivalents and receivables from affiliates.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	For purposes of reporting cash and cash equivalents, temporary cash investments purchased with a remaining maturity of three months or less are considered to be cash equivalents.

Investment_In_Oncor_Holdings_T

Investment In Oncor Holdings (Tables)	12 Months Ended
	Dec. 31, 2013
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 years ended December 31, 2013, 2012 and 2011 are presented below:
		Year Ended December 31,
		2013			2012			2011
	Operating revenues	$	3,552		$	3,328		$	3,118
	Operation and maintenance expenses	(1,269		)	(1,171		)	(1,097		)
	Depreciation and amortization	(814		)	(771		)	(719		)
	Taxes other than income taxes	(424		)	(415		)	(400		)
	Other income	18			26			30
	Other deductions	(15		)	(64		)	(9		)
	Interest income	4			24			32
	Interest expense and related charges	(371		)	(374		)	(359		)
	Income before income taxes	681			583			596
	Income tax expense	(259		)	(243		)	(236		)
	Net income	422			340			360
	Net income attributable to noncontrolling interests	(87		)	(70		)	(74		)
	Net income attributable to Oncor Holdings	$	335		$	270		$	286
Schedule of assets and liabilities of Oncor Holdings	'
	Assets and liabilities of Oncor Holdings at December 31, 2013 and 2012 are presented below:
		December 31,
		2013			2012
	ASSETS
	Current assets:
	Cash and cash equivalents	$	28		$	45
	Restricted cash	52			55
	Trade accounts receivable — net	385			338
	Trade accounts and other receivables from affiliates	135			53
	Income taxes receivable from EFH Corp.	16			—
	Inventories	65			73
	Accumulated deferred income taxes	32			26
	Prepayments and other current assets	82			82
	Total current assets	795			672
	Restricted cash	16			16
	Other investments	91			83
	Property, plant and equipment — net	11,902			11,318
	Goodwill	4,064			4,064
	Regulatory assets — net	1,324			1,788
	Other noncurrent assets	71			78
	Total assets	$	18,263		$	18,019
	LIABILITIES
	Current liabilities:
	Short-term borrowings	$	745		$	735
	Long-term debt due currently	131			125
	Trade accounts payable — nonaffiliates	178			121
	Income taxes payable to EFH Corp.	23			34
	Accrued taxes other than income	169			153
	Accrued interest	95			95
	Other current liabilities	135			110
	Total current liabilities	1,476			1,373
	Accumulated deferred income taxes	1,905			1,736
	Long-term debt, less amounts due currently	5,381			5,400
	Other noncurrent liabilities and deferred credits	1,822			2,023
	Total liabilities	$	10,584		$	10,532

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
	The components of EFIH's income tax expense (benefit) are as follows:
		Year Ended December 31,
		2013			2012			2011
	Current:
	US Federal	$	(115	)	$	25		$	72
	State	1			4			3
	Deferred:
	US Federal	(55		)	(2		)	(2		)
	Total income tax expense (benefit)	$	(169	)	$	27		$	73
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
	Reconciliation of income taxes computed at the US federal statutory rate to income tax expense (benefit) recorded:
		Year Ended December 31,
		2013			2012			2011
	Income (loss) before income taxes and equity in earnings of unconsolidated subsidiaries	$	(606	)	$	72		$	204
	Income taxes at the US federal statutory rate of 35%	(212		)	25			72
	Nondeductible reserve for tax receivable from EFH Corp.	38			—			—
	Other	5			2			1
	Income tax expense (benefit)	$	(169	)	$	27		$	73
	Effective rate	27.9		%	37.5		%	35.8		%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
	Deferred income taxes provided for temporary differences based on tax laws in effect at December 31, 2013 and 2012 are as follows:
		December 31,
		2013									2012
		Total			Current			Noncurrent			Total		Current		Noncurrent
	Deferred Income Tax Assets:
	Accrued interest	$	3		$	—		$	3		$	5	$	—	$	5
	Debt extinguishment gains (Note 6)	49			—			49			75		—		75
	Debt fair value discount	1			—			1			—		—		—
	Total	53			—			53			80		—		80
	Deferred Income Tax Liabilities:
	Debt extinguishment gains related to pushed down debt of EFH Corp. (Note 6)	103			26			77			104		—		104
	Debt fair value discount	—			—			—			85		—		85
	Total	103			26			77			189		—		189
	Net Accumulated Deferred Income Tax Liability	$	50		$	26		$	24		$	109	$	—	$	109

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments	'
	At December 31, 2013 and 2012, debt consisted of the following:
		December 31,
		2013			2012
	Debt issued by EFIH:
	6.875% Fixed Senior Secured First Lien Notes due August 15, 2017	$	503		$	503
	10% Fixed Senior Secured First Lien Notes due December 1, 2020	3,482			2,180
	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			1,304
	9.75% Fixed Senior Notes due October 15, 2019	2			141
	Unamortized premium	284			351
	Unamortized discount	(146		)	(131		)
	Total debt issued by EFIH	7,847			6,504
	Pushed down debt (a):
	9.75% EFH Corp. Fixed Senior Notes due October 15, 2019	—			57
	10% EFH Corp. Fixed Senior Notes due January 15, 2020	—			331
	10.875% EFH Corp. Fixed Senior Notes due November 1, 2017	17			32
	11.25%/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017	13			30
	Total pushed down debt	30			450
	Total debt	$	7,877		$	6,954
	________________
	(a)	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. Debt."
Schedule of securities guaranteed, principal amounts	'
	The following table presents an analysis of the total outstanding principal amount of EFH Corp. debt guaranteed by EFCH and EFIH at December 31, 2012 and December 31, 2013, respectively.
			31-Dec-12
	Securities Guaranteed (principal amounts)		Held by EFIH			Subject to Push Down		Not Merger-Related		Total Guaranteed		Debt Cancelled in 2013 (c)		Total Guaranteed December 31, 2013 (d)
	EFH Corp. 9.75% Senior Notes (a)		$	—		$	115	$	—	$	115	$	113	$	—
	EFH Corp. 10% Senior Notes (a)		—			661		400		1,061		1,058		—
	EFH Corp. 10.875% Senior Notes		1,685			64		—		1,749		1,715		33
	EFH Corp. 11.25%/12.00% Senior Toggle Notes		3,441			60		—		3,501		3,474		27
	Subtotal		$	5,126		$	900	$	400	6,426		$	6,360	60
	TCEH Demand Notes (b)									698				—
	Total									$	7,124			$	60
	________________
	(a)	As a result of transactions completed in the first quarter 2013, as discussed above, the guarantees of the EFH Corp. 9.75% Notes and EFH Corp. 10% Notes were eliminated.
	(b)	The TCEH Demand Notes were settled in January 2013. See Note 9.
	(c)	See Note 8 for discussion of debt distributions and cancellations.
	(d)	These amounts are subject to push down.

Membership_Interests_Tables

Membership Interests (Tables)	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Available-for-sale Securities	'
	The principal amounts, coupon rates, maturities and carrying value of holdings of debt of affiliates are as follows:
		31-Dec-13						31-Dec-12
		Principal Amount			Carrying Value			Principal Amount			Carrying Value
	EFH Corp. 10.875% Fixed Senior Notes due November 1, 2017	$	—		$	—		$	1,685		$	1,502
	EFH Corp. 11.25%/12.00% Senior Toggle Notes due November 1, 2017	—			—			3,441			3,108
	EFH Corp. 5.55% Fixed Senior Notes Series P due November 15, 2014	281			185			279			197
	EFH Corp. 6.50% Fixed Senior Notes Series Q due November 15, 2024	545			249			516			260
	EFH Corp. 6.55% Fixed Senior Notes Series R due November 15, 2034	456			194			456			221
	TCEH 10.25% Fixed Senior Notes due November 1, 2015 (both periods include $48 million principal amount of Series B Notes)	79			7			79			13
	Total	$	1,361		635			$	6,456		5,301
	Accrued interest receivable				—						87
	Balance reported as reduction in membership interests				$	635					$	5,388
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	The following table presents the changes to accumulated other comprehensive income (loss) for the year ended December 31, 2013.
		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
	Other comprehensive loss before reclassifications (after tax) arising in 2013	—			—			(16		)	(16		)
	Amounts reclassified from accumulated other comprehensive income (loss) and reported in:
	Interest income	—			(284		)	—			(284		)
	Equity in earnings of unconsolidated subsidiaries	2			—			—			2
	Income tax benefit	—			99			—			99
	Total amount reclassified from accumulated other comprehensive income (loss) during the period	2			(185		)	—			(183		)
	Total change during the period	2			(185		)	(16		)	(199		)
	Balance at December 31, 2013	$	(21	)	$	—		$	(18	)	$	(39	)

Supplementary_Financial_Inform1

Supplementary Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]	'
Investment Income [Table Text Block]	'
		Year Ended December 31,
		2013			2012			2011
	Available-for-sale securities:
	Interest received/accrued	$	—		$	232		$	178
	Accretion of purchase discount	—			92			140
	PIK interest received/accrued related to EFH Corp. Toggle Notes	—			288			308
	Mark-to-market gain reclassified from AOCI	284			—			3
	Impairments related to issuer credit	—			(14		)	(77		)
	Total interest	$	284		$	598		$	552
Schedule of interest expense and related charges	'
	Interest Expense and Related Charges
		Year Ended December 31,
		2013			2012			2011
	Interest paid/accrued	$	630		$	434		$	264
	Interest expense related to pushed down debt	6			75			78
	Interest expense on toggle notes payable in additional principal (Note 6)	176			12			—
	Amortization of debt exchange premiums	(80		)	(8		)	—
	Amortization of debt exchange discounts and issuance costs	28			13			6
	Total interest expense and related charges	$	760		$	526		$	348
Schedule of cash flow, supplemental disclosures	'
	Supplemental Cash Flow Information
		Year Ended December 31,
		2013			2012			2011
	Cash payments (receipts) related to:
	Interest paid	$	619		$	352		$	257
	Interest received on investments in debt of affiliates (net of tax) (a)	—			(184		)	(184		)
	Income taxes	(5		)	180			30
	Noncash investing and financing activities:
	Receipt of additional EFH Corp. Toggle Notes in lieu of cash interest	—			344			312
	Principal amount of toggle notes issued in lieu of cash interest (Note 6)	173			—			—
	Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (net of tax) (Note 6) (b)	23			22			33
	Capital contribution related to settlement of certain income taxes payable (c)	—			—			30
	Reduction of debt pushed down from EFH Corp. (Note 6) (d)	(420		)	(282		)	(167		)
	Debt exchange transactions (e)	14			457			22
	Distribution to EFH Corp. of debt held as an investment (Note 8)	(5,778		)	160			45
	Income tax on interest received on holdings of affiliate debt (Note 8)	(88		)	—			—
	____________
	(a)	Interest received in 2013 reported as an increase in membership interests (see Note 8).
	(b)	Amounts include cash interest and EFH Toggle Notes issued through the PIK election (at 50%) (see Note 6).
	(c)	Reflects noncash settlement of certain income taxes payable arising as a result of the sale of noncontrolling interests in Oncor.
	(d)	For the year ended December 31, 2013, represents $838 million principal amount of EFH Corp. debt exchanged (at 50%). For the year ended December 31, 2012, represents $564 million principal amount of EFH Corp. debt exchanged (at 50%). See Note 6.
	(e)	For the year ended December 31, 2013 reflects: $1.302 billion of EFIH debt issued in exchange for $1.310 billion of EFH Corp. and EFIH debt and $89 million of EFIH debt issued in exchange for $95 million of EFH Corp. debt. For the year ended December 31, 2012 reflects: $1.304 billion of EFIH debt issued in exchange for $1.761 billion of EFH Corp. debt. See Note 6.

Business_And_Significant_Accou1

Business And Significant Accounting Policies (Details) (Oncor [Member])	Dec. 31, 2013	Nov. 30, 2008
Oncor [Member]	'	'
Business and Significant Accounting Policies	'	'
Equity method investment, ownership (as a percent)	80.00%	'
Sale of equity ownership interest (as a percent)	'	19.75%

Subsequent_Event_Bankruptcy_Fi1

Subsequent Event - Bankruptcy Filing (Details) (USD $)

1 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

Apr. 30, 2014

Apr. 29, 2014

Apr. 29, 2014

Apr. 29, 2014

Mar. 31, 2014

Apr. 29, 2014

Apr. 29, 2014

Dec. 31, 2013

Dec. 31, 2013

Apr. 29, 2014

Dec. 31, 2013

Apr. 29, 2014

Apr. 29, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Apr. 29, 2014

Apr. 29, 2014

Apr. 29, 2014

Apr. 29, 2014

Apr. 29, 2014

Texas Competitive Electric Holdings Company LLC [Member]

Energy Future Holdings Corp. [Member]

Secured Debt [Member]

Debtor-In-Possession Facility [Member]

Debtor-In-Possession Facility [Member]

Unsecured Debt [Member]

Unsecured Debt [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]

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

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

Second Lien Debtor-in-Possession Agreement [Member]

Mandatorily 8% Convertible Second Lien Subordinated Secured Financing Tranche A-2 Notes due 2016 [Member]

11% Senior Secured Second Lien Notes due October 1, 2021 [Member]

11% Senior Secured Second Lien Notes due October 1, 2021 [Member]

11.75% Fixed Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Fixed Senior Secured Second Lien Notes due March 1, 2022 [Member]

Mandatorily 8% Convertible Second Lien Subordinated Secured Financing Tranche A-1 Notes due 2016 [Member]

Backstop Commitment [Member]

Commitment Letter and Backstop Commitment Agreement [Member]

Commitment Letter and Backstop Commitment Agreement [Member]

Second Lien Debtor-in-Possession Facility, Secured, Super-Priority Financing [Member]

Subsequent Event [Member]

Texas Competitive Electric Holdings Company 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 Holdings Corp. [Member]

Secured Debt [Member]

Secured Debt [Member]

First Lien Debtor-in-Possession Facility [Member]

Secured Debt [Member]

Second Lien Debtor-in-Possession Facility [Member]

Debtor-In-Possession Facility [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Debtor-In-Possession Facility [Member]

Commitment Letter [Member]

Energy Future Intermediate Holding CO LLC [Member]

Non-Interest Bearing Mandatorily Convertible Second Lien Subordinated Secured Financing Tranche B Notes due 2016 [Member]

Debtor-In-Possession Facility [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Energy Future Intermediate Holding CO LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Texas Competitive Electric Holdings Company 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]

Subsequent Event [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Payment Amount, Election To Use Permitted Grace Period

$123,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Debt Settlement, Equity Interest Debt Holders will Receive

'

'

100.00%

'

'

98.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stated interest rate (as a percent)

'

'

'

'

'

'

'

6.88%

6.88%

'

10.00%

'

'

11.00%

11.00%

11.75%

11.75%

8.00%

'

'

'

'

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

'

'

'

'

'

'

'

'

'

105.00%

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

101.00%

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

104.00%

'

'

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Debt Settlement, Settlement Price, Percent of Principal and Aggregate Amount of Claim Related to Makewhole Provisions, Percentage of Principal

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Debt Settlement, Settlement Price, Percent of Principal and Aggregate Amount of Claim Related to Makewhole Provisions, Percentage of Claims on Makewhole Provision

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Debt Settlement, Amount of New Loans that Debtors will be Entitled to Receive

'

'

'

'

'

'

'

'

'

'

'

500,000,000

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Special Offering, Principal Amount

'

'

'

'

'

'

'

'

'

'

'

'

1,900,000,000

'

'

'

'

'

'

'

100,000,000

'

Debtor-in-Possession Financing, Commitment Letter

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000,000

'

'

'

Debt Instrument, Execution Fee Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40,000,000

'

'

Debt Instrument, Early Termination Fee Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

380,000,000

'

'

Debt Instrument, Break-up Fee Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60,000,000

'

'

Debtor-in-Possession Financing, Debt Settlement, Settlement Price, Pro-rata Amount of Cash Provided That Tax Payments Reach Projected Threshold Percentage, Amount of Cash

'

'

'

'

'

55,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Debt Settlement, Settlement Price, Pro-rata Amount of Cash Provided That Tax Payments Reach Projected Threshold Percentage, Threshold Percentage

'

'

'

'

'

80.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Debt Settlement, Equity Interest Equity Interest Holders will Receive in Reorganized Entity

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Second Lien Debtor-in-Possession Facility, Equity Conversion, Prorated Conversion, Equity Percentage

'

'

'

'

'

'

'

'

'

'

'

64.00%

'

'

'

'

'

'

'

'

'

'

Second Lien Debtor-in-Possession Facility, Interest Rate Terms, Alternative Interest Rate if Court does not Approve Amendment in Certain Number of Days, Number of Days

'

'

'

'90 days

'

'

'

'

'

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

Second Lien Debtor-in-Possession Facility, Interest Rate Terms, Alternative Interest Rate if Court does not Approve Amendment in Certain Number of Days, Incremental Interest Increase

'

'

'

'

'

'

'

'

'

'

'

4.00%

'

'

'

'

'

'

'

'

'

'

Second Lien Debtor-in-Possession Facility, Terms, Notes Issuable if Amendment is not Approved by Threshold Date, Percentage of Outstanding Notes Lien Holder Would get In New Notes, Percentage

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

Debtor-in-Possession Financing, Amount Arranged

'

'

'

'

$5,400,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,900,000,000

Investment_In_Oncor_Holdings_O

Investment In Oncor Holdings (Oncor Holdings and Distributions from Oncor Holdings) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2008	Sep. 30, 2008
					Cash_commitments
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Investment in unconsolidated subsidiary	$5,950	$5,842	'	'	'
Distributions of earnings from unconsolidated subsidiaries	213	147	116	'	'
Oncor [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Equity method investment, ownership (as a percent)	80.00%	'	'	'	'
Oncor Holdings [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Distributions of earnings from unconsolidated subsidiaries	213	147	116	'	'
Eligible distributions after accounting for regulatory restrictions	192	'	'	'	'
Equity Method Investment Goodwill Impairment Charge Removal	'	'	'	860	'
Number of cash commitments	'	'	'	'	2
PUCT required regulatory capitalization, ratio of debt to equity, debt (as a percent)	60.00%	'	'	'	'
PUCT required regulatory capitalization, ratio of debt to equity, equity (as a percent)	40.00%	'	'	'	'
PUCT required regulatory capitalization ratio of debt to equity, debt (as a percent)	58.70%	'	'	'	'
PUCT required regulatory capitalization ratio of debt to equity, equity (as a percent)	41.30%	'	'	'	'
Oncor Holdings [Member] | Refunds to customers [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Public Utilities, One-time Cash Commitment Refund Before Tax	'	'	'	'	72
Public Utilities, One-time Cash Commitment Refund After Tax	'	'	'	'	46
Public Utilities, Number of customer refunds	'	'	'	'	1
Oncor Holdings [Member] | Commitment for additional energy efficiency initiatives [Member]	'	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'	'
Public Utilities, Total Commitment For Additional Energy Efficiency Initiatives, Period to Spend Funds	'	'5 years	'	'	'
Public Utilities, Total Commitment For Additional Energy Efficiency Initiatives	'	$100	'	'	'

Investment_In_Oncor_Holdings_O1

Investment In Oncor Holdings (Oncor Holdings Financial Statements) (Details) (Variable Interest Entity, Primary Beneficiary [Member], Oncor Holdings [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Variable Interest Entity, Primary Beneficiary [Member] | Oncor Holdings [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Operating revenues	$3,552	$3,328	$3,118
Operation and maintenance expenses	-1,269	-1,171	-1,097
Depreciation and amortization	-814	-771	-719
Taxes other than income taxes	-424	-415	-400
Other income	18	26	30
Other deductions	-15	-64	-9
Interest income	4	24	32
Interest expense and related charges	-371	-374	-359
Income before income taxes	681	583	596
Income tax expense	-259	-243	-236
Net income	422	340	360
Net income attributable to noncontrolling interests	-87	-70	-74
Net income attributable to Oncor Holdings	335	270	286
Current assets:	'	'	'
Cash and cash equivalents	28	45	'
Restricted cash	52	55	'
Trade accounts receivable b net	385	338	'
Trade accounts and other receivables from affiliates	135	53	'
Income taxes receivable from EFH Corp.	16	0	'
Inventories	65	73	'
Accumulated deferred income taxes	32	26	'
Prepayments and other current assets	82	82	'
Total current assets	795	672	'
Restricted cash	16	16	'
Other investments	91	83	'
Property, plant and equipment b net	11,902	11,318	'
Goodwill	4,064	4,064	'
Regulatory assets b net	1,324	1,788	'
Other noncurrent assets	71	78	'
Total assets	18,263	18,019	'
Current liabilities:	'	'	'
Short-term borrowings	745	735	'
Long-term debt due currently	131	125	'
Trade accounts payable b nonaffiliates	178	121	'
Income taxes payable to EFH Corp.	23	34	'
Accrued taxes other than income	169	153	'
Accrued interest	95	95	'
Other current liabilities	135	110	'
Total current liabilities	1,476	1,373	'
Accumulated deferred income taxes	1,905	1,736	'
Long-term debt, less amounts due currently	5,381	5,400	'
Other noncurrent liabilities and deferred credits	1,822	2,023	'
Total liabilities	$10,584	$10,532	'

Income_Taxes_The_components_of

Income Taxes The components of EFIH's income tax (benefit) expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Current Federal Tax Expense (Benefit)	($115)	$25	$72
Current State and Local Tax Expense (Benefit)	1	4	3
Deferred Federal Income Tax Expense (Benefit)	-55	-2	-2
Income tax expense (benefit)	($169)	$27	$73

Income_Taxes_Reconciliation_of

Income Taxes Reconciliation of income taxes computed at the US federal statutory rate (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Income (loss) before income taxes and equity in earnings of unconsolidated subsidiaries	($606)	$72	$204
Income taxes at the US federal statutory rate of 35%	-212	25	72
Federal Statutory Rate	35.00%	35.00%	35.00%
Nondeductible reserve for tax receivable from EFH Corp.	38	0	0
Other	5	2	1
Income tax expense (benefit)	($169)	$27	$73
Effective rate	27.90%	37.50%	35.80%

Income_Taxes_Summary_of_Deferr

Income Taxes Summary of Deferred Income Taxes (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Operating Loss Carryforwards [Line Items]	'	'
Accrued interest	$3	$5
Accrued interest, Current	0	0
Accrued interest, Noncurrent	3	5
Debt extinguishment gains (Note 6)	49	75
Debt extinguishment gains, Current	0	0
Debt extinguishment gains, Noncurrent	49	75
Debt fair value discount	1	0
Debt fair value discount, Current	0	0
Debt fair value discount, Noncurrent	1	0
Total	53	80
Total, Current	0	0
Total, Noncurrent	53	80
Debt extinguishment gains related to pushed down debt of EFH Corp. (Note 6)	103	104
Debt extinguishment gains related to pushed down debt of EFH Corp., Current	26	0
Debt extinguishment gains related to pushed down debt of EFH Corp., Noncurrent	77	104
Debt fair value discount	0	85
Debt fair value discount, Current	0	0
Debt fair value discount, Noncurrent	0	85
Total	103	189
Total, Current	26	0
Total, Noncurrent	77	189
Net Deferred Income Tax Liability	50	109
Net Deferred Income Tax Liability, Current	26	0
Net Deferred Income Tax Liability	24	109
Income Taxes Receivable, Current	110	'
Internal Revenue Service (IRS) [Member]	'	'
Operating Loss Carryforwards [Line Items]	'	'
Operating Loss Carryforwards	$328	'

Reserve_for_Income_Tax_Receiva1

Reserve for Income Tax Receivable (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Income Tax Disclosure [Abstract]	'
Income Taxes Receivable, Current	$110

Debt_DebtorInPossession_DIP_Fa

Debt Debtor-In-Possession (DIP) Facility (Details) (Subsequent Event [Member], Energy Future Intermediate Holding CO LLC [Member], Debtor-In-Possession Facility [Member], USD $)	0 Months Ended	3 Months Ended
	Apr. 29, 2014	Mar. 31, 2014
Debt Instrument [Line Items]	'	'
Debt Instrument, Term	'24 months	'
First Lien Debtor-in-Possession Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debtor-in-Possession Financing, First-lien, Amount	$5,400,000,000	'
Debtor-in-Possession Financing, Facility, Period in Which Commitment from Financial Institution Would Terminate if Bankruptcy Court does Not Approve Interim Order Approving Such Financing	'10 days	'
Debt Instrument, Term	'24 months	'
Debt Instrument, Extension Fee, Twenty-Fifth Through Thirtieth Month	'	0.25%
Second Lien Debtor-in-Possession Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debtor-in-Possession Financing, Second-lien, Amount	$1,900,000,000	'
Second Lien Debtor-in-Possession Facility, Equity Conversion, Prorated Conversion, Equity Percentage	64.00%	'

Debt_Debt_Details

Debt (Debt) (Details) (USD $)

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Aug. 31, 2012

Feb. 29, 2012

Dec. 31, 2013

Dec. 31, 2013

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Minimum [Member]

Maximum [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]

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]

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

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

11% Senior Secured Second Lien Notes due October 1, 2021 [Member]

11% Senior Secured Second Lien Notes due October 1, 2021 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

10% EFH Corp. Fixed Senior Secured Notes due January 15, 2020 [Member]

10% EFH Corp. Fixed Senior Secured Notes due January 15, 2020 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Minimum [Member]

Maximum [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [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]

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

11% Senior Secured Second Lien Notes due October 1, 2021 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

Senior Notes [Member]

Senior Notes [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Current Maturities

'

'

'

'

$503

'

$3,482

'

$406

'

$1,750

'

$1,566

'

$2

'

'

'

$0

[1]

'

$0

[1]

'

$17

[1]

'

$13

[1]

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, gross

'

'

'

'

'

503

'

2,180

'

406

'

1,750

'

1,304

'

141

'

'

'

57

[1]

'

331

[1]

'

32

[1]

'

30

[1]

'

'

'

'

'

'

'

'

'

'

'

Unamortized premium

'

'

284

351

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8

'

'

'

14

'

'

'

Unamortized discount

'

'

-146

-131

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-12

'

'

Total debt

7,877

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt

$0

$6,954

$7,847

$6,504

'

'

'

'

'

'

'

'

'

'

'

'

'

$450

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stated interest rate (as a percent)

'

'

'

'

6.88%

'

'

'

11.00%

'

11.75%

'

'

'

9.75%

'

'

'

9.75%

[1]

'

'

'

10.88%

[1]

'

'

'

'

'

6.88%

'

10.00%

11.00%

11.75%

'

'

'

'

Effective interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

[1]

'

'

'

'

'

11.25%

[1]

12.00%

[1]

'

'

'

'

'

'

'

11.25%

12.25%

Percentage of securities guaranteed by and push down debt

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

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. Debt."

Debt_Debt_Related_Activity_Det

Debt (Debt Related Activity) (Details) (USD $)

1 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 31, 2012

Dec. 31, 2012

Aug. 31, 2012

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Aug. 31, 2012

Feb. 29, 2012

Aug. 31, 2012

Dec. 31, 2012

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Energy Future Holdings Corp. [Member]

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

Series B [Member]

Series B [Member]

10% Senior Secured Notes Due 2020 [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

9.75 Senior Secured Notes Due 2019 [Member]

9.75 Senior Secured Notes Due 2019 [Member]

9.75 Senior Secured Notes Due 2019 [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]

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]

6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]

10.875% Senior Notes due 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

Fixed Series P 5.55% Senior Notes due November 15, 2014 [Member]

Fixed Series P 5.55% Senior Notes due November 15, 2014 [Member]

Fixed Series Q 6.50% Senior Notes due November 15, 2024 [Member]

Fixed Series Q 6.50% Senior Notes due November 15, 2024 [Member]

Toggle Notes [Member]

Toggle Notes [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

11% Senior Secured Second Lien Notes due October 1, 2021 [Member]

11.25%/ 12.25% Senior Toggle Notes Due 2018 [Member]

11.25%/ 12.25% Senior Toggle Notes Due 2018 [Member]

Fixed Series R 6.55% Senior Notes due November 15, 2034 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Secured Debt [Member]

Secured Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

TCEH Corp. [Member]

TCEH Corp. [Member]

Senior Notes [Member]

Senior Notes [Member]

Energy Future Intermediate Holding CO LLC [Member]

Secured Debt [Member]

Senior Notes [Member]

Energy Future Holdings Corp. [Member]

Secured Debt [Member]

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 Holdings Corp. [Member]

Energy Future Holdings Corp. [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 Holdings Corp. [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Holdings Corp. [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Holdings Corp. [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]

Senior Notes [Member]

Secured Debt [Member]

Senior Notes [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]

Financial Guarantee [Member]

Related Party Transactions, Returned Debt as Dividend [Member]

Related Party Transactions, Returned Debt as Dividend [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Senior Notes [Member]

Secured Debt [Member]

Oncor Holdings [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Subject to Push Down [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Amounts in Escrow Related to August 2012 Debt Issuances [Member]

Subject to Push Down [Member]

Subject to Push Down [Member]

Subject to Push Down [Member]

Subject to Push Down [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long Term Debt And Capital Leases Issued, Principal Amount

'

$1,564,000,000

$3,557,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,304,000,000

'

'

'

'

'

$253,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$89,000,000

'

'

$600,000,000

$1,150,000,000

'

'

Long Term Debt Issued, Principal Amount, PIK Interest Election

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

173,000,000

'

'

'

'

'

Principal Amount Of Affiliate Debt Acquired In Exchange Transaction

'

'

'

'

1,310,000,000

'

'

'

160,000,000

'

'

'

'

95,000,000

1,058,000,000

'

'

1,761,000,000

'

'

'

'

'

'

'

'

'

139,000,000

'

113,000,000

'

'

'

'

'

31,000,000

33,000,000

432,000,000

'

'

'

'

2,000,000

234,000,000

29,000,000

510,000,000

'

'

'

132,000,000

39,000,000

'

'

'

'

'

'

'

453,000,000

'

'

'

'

Pledged Ownership Membership Interest Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Principal Amounts Returned as Dividend to Parent and Cancelled

'

'

'

'

'

'

'

1,235,000,000

'

'

'

'

'

'

'

6,360,000,000

158,000,000

'

'

'

'

'

'

'

1,058,000,000

1,304,000,000

'

'

113,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,474,000,000

119,000,000

1,715,000,000

'

'

1,715,000,000

[1]

'

'

'

1,750,000,000

'

'

'

'

'

'

'

Debt Instrument Principal Amount Of Subsidiaries Still Held By Affiliate

1,361,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred tax assets, deferred income gain relating to membership interests transactions

'

21,000,000

336,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

503,000,000

250,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

698,000,000

Debt Instrument, Unamortized Premium

'

'

'

'

'

284,000,000

351,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,000,000

'

'

'

Restricted cash (Note 6)

'

0

680,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

680,000,000

'

Debt Instrument, Unamortized Discount

'

'

'

'

'

146,000,000

131,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,000,000

'

'

Cash Dividends Paid to Parent Company

680,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

950,000,000

'

'

Debt Instrument Principal Amount Guarantee Obligations Of Subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60,000,000

60,000,000

[2]

6,426,000,000

900,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27,000,000

[2]

3,501,000,000

27,000,000

60,000,000

'

'

'

'

'

'

'

'

'

33,000,000

[2]

1,749,000,000

33,000,000

64,000,000

'

'

'

'

'

'

'

'

Debt and Capital Lease Obligations

'

'

'

'

'

'

'

'

'

30,000,000

450,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Percentage of principal plus unamortized premium of Parent Merger-related debt guaranteed by subsidiary

'

'

'

'

'

'

'

'

'

50.00%

'

50.00%

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Parent's payment of interest on pushed-down debt accounted for as a contribution of capital (net of tax) (Note 6) (a)

'

23,000,000

53,000,000

60,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes Payable, Current

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$48,000,000

$48,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

(c)See Note 8 for discussion of debt distributions and cancellations.

[2]

These amounts are subject to push down.

Debt_Guarantees_and_Push_Down_

Debt (Guarantees and Push Down of EFH Corp. Debt) (Details) (USD $)

1 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Jan. 31, 2013

Dec. 31, 2013

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Senior Notes [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10% EFH Corp. Fixed Senior Secured Notes due January 15, 2020 [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]

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]

Energy Future Intermediate Holding CO LLC [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Senior Notes [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [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]

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

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

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

TCEH Demand Notes (Note 6) [Member]

TCEH Demand Notes (Note 6) [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes And Demand Notes Payable [Member]

Senior Notes And Demand Notes Payable [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Financial Guarantee [Member]

Held By Energy Future Intermediate Holding CO LLC [Member]

Subject to Push Down [Member]

Not Merger-Related [Member]

Not Merger-Related [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Demand Notes Payable [Member]

Demand Notes Payable [Member]

Held By Energy Future Intermediate Holding CO LLC [Member]

Subject to Push Down [Member]

Not Merger-Related [Member]

Held By Energy Future Intermediate Holding CO LLC [Member]

Subject to Push Down [Member]

Not Merger-Related [Member]

Held By Energy Future Intermediate Holding CO LLC [Member]

Subject to Push Down [Member]

Subject to Push Down [Member]

Not Merger-Related [Member]

Held By Energy Future Intermediate Holding CO LLC [Member]

Subject to Push Down [Member]

Subject to Push Down [Member]

Not Merger-Related [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Principal Amount Guarantee Obligations Of Subsidiaries

'

'

'

'

'

$60

$60

[1]

$6,426

$5,126

$900

'

$400

'

'

$0

[1],[2]

$115

[2]

$0

[2]

$115

[2]

$0

[2]

$0

[1],[2]

$1,061

[2]

$0

[2]

$661

[2]

$400

[2]

$33

[1]

$1,749

$1,685

$33

$64

$0

$27

[1]

$3,501

$3,441

$27

$60

'

'

'

Intercompany payables

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

[1],[3]

698

[3]

Total

'

'

'

'

'

'

'

'

'

'

'

'

60

[1]

7,124

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Principal Amounts Returned as Dividend to Parent and Cancelled

$1,235

'

$1,715

'

'

'

'

'

'

'

$6,360

[4]

'

'

'

$113

[2],[4]

'

'

'

'

$1,058

[2],[4]

'

'

'

'

$1,715

[4]

'

'

'

'

'

'

'

'

'

'

$3,474

[4]

'

'

Stated interest rate (as a percent)

'

9.75%

[5]

'

10.88%

[5]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effective interest rate (as a percent)

'

'

'

'

10.00%

[5]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

These amounts are subject to push down.

[2]

As a result of transactions completed in the first quarter 2013, as discussed above, the guarantees of the EFH Corp. 9.75% Notes and EFH Corp. 10% Notes were eliminated.

[3]

The TCEH Demand Notes were settled in January 2013. See Note 9.

[4]

(c)See Note 8 for discussion of debt distributions and cancellations.

[5]

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. Debt."

Debt_Issuances_of_EFIH_6875_Se

Debt (Issuances of EFIH 6.875% Senior Secured Notes) (Details) (Secured Debt [Member], 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Debt Instrument [Line Items]	'
Long-term Debt, Current Maturities	503
Pledged Ownership Membership Interest Percentage	100.00%
Energy Future Intermediate Holding CO LLC [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%
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	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%

Debt_EFIH_10_Senior_Secured_De

Debt (EFIH 10% Senior Secured Debt) (Details) (USD $)	12 Months Ended		1 Months Ended			12 Months Ended	1 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Aug. 31, 2012	Feb. 29, 2012	Dec. 31, 2013
			Secured Debt [Member]	Secured Debt [Member]	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]
			10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	Secured Debt [Member]	Secured Debt [Member]	Secured Debt [Member]	Secured Debt [Member]
						10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'	'
Long-term Debt, Current Maturities	'	'	'	$3,482	$1,750	'	'	'	'
Long Term Debt And Capital Leases Issued, Principal Amount	$1,564	$3,557	$1,302	'	'	'	$600	$1,150	'
Debt Instrument, Registration Default, if not filed and declared effective after original issue date, variable interest rate increase for first ninety days	'	'	'	'	'	0.25%	'	'	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%	'	'	12.00%
Debt Instrument Registration Default If Not Registered Within One Year Of Original Issue Date, Total Interest Rate Percentage After First Ninety Days	'	'	'	'	'	10.50%	'	'	12.50%
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_EFIH_11_Senior_Secured_Se

Debt (EFIH 11% Senior Secured Second Lien Notes) (Details) (Secured Debt [Member], 11% Senior Secured Second Lien Notes due October 1, 2021 [Member], USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Secured Debt [Member] | 11% Senior Secured Second Lien Notes due October 1, 2021 [Member]	'
Debt Instrument [Line Items]	'
Long-term Debt, Current Maturities	$406

Debt_Issuance_of_EFIH_1175_Sen

Debt (Issuance of EFIH 11.75% Senior Secured Second Lien Notes and Toggle Notes) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Secured Debt [Member] | 6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]	'
Debt Instrument [Line Items]	'
Long-term Debt, Current Maturities	503
Secured Debt [Member] | 10% Fixed Senior Secured First Lien Notes due December 1, 2020 [Member]	'
Debt Instrument [Line Items]	'
Long-term Debt, Current Maturities	3,482
Secured Debt [Member] | 11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]	'
Debt Instrument [Line Items]	'
Long-term Debt, Current Maturities	1,750
Secured Debt [Member] | 11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]	'
Debt Instrument [Line Items]	'
Long-term Debt, Current Maturities	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] | 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%
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	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] | 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%
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%
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]	'
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] | Secured Debt [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%
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	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%

Debt_Fair_Value_of_LongTerm_De

Debt (Fair Value of Long-Term Debt) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Carrying (Reported) Amount, Fair Value Disclosure [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Fair Value Disclosure	$7,877	$6,954
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Fair Value Disclosure	$7,849	$7,258

Membership_Interests_Narrative

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

1 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Jan. 31, 2013

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Oct. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2013

Feb. 29, 2012

Dec. 31, 2013

Jan. 31, 2013

Oct. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Texas Competitive Electric Holdings Company LLC [Member]

EFH Corp. and TCEH [Member]

Capital Accounts [Member]

Capital Accounts [Member]

Capital Accounts [Member]

Secured Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

10% Senior Secured Notes Due 2020 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Parent Company [Member]

Parent Company [Member]

Oncor [Member]

Texas Transmission [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

Toggle Notes [Member]

Toggle Notes [Member]

Toggle Notes [Member]

10% EFH Corp. Fixed Senior Secured Notes due January 15, 2020 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

Interest Income [Member]

Interest Income [Member]

Related Party Transactions, Returned Debt as Dividend [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Management and Board of Directors [Member]

Secured Debt [Member]

Senior Notes [Member]

Secured Debt [Member]

Energy Future Intermediate Holding CO LLC [Member]

Energy Future Intermediate Holding CO LLC [Member]

Push Down Debt [Member]

Secured Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Parent Company [Member]

Energy Future Holdings Corp. [Member]

Related Party Transactions, Returned Debt as Dividend [Member]

Related Party Transactions, Returned Debt as Dividend [Member]

Related Party Transactions, Returned Debt as Dividend [Member]

Secured Debt [Member]

Secured Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Distribution Restrictions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash Dividends Paid to Parent Company

$680

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$950

'

'

'

'

'

'

'

'

'

'

'

Consolidated leverage ratio related to dividend restrictions covenant (as a ratio)

'

'

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated leverage ratio related to dividend restrictions, actual ratio (as a ratio)

'

'

7.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Principal Amounts Cancelled

1,235

'

'

5,125

'

'

'

'

'

'

'

'

'

'

6,360

1,715

3,474

1,058

113

'

'

'

'

'

'

'

1,266

'

'

'

'

53

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure, Reclassification To Membership Interest

'

'

'

'

'

45

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment, Ownership Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.03%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.22%

19.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest received on holdings of affiliate debt

'

'

-252

0

0

'

'

'

252

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Fair Value Disclosure

'

'

'

'

'

'

'

'

'

'

'

'

5,778

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Principal Amount Of Subsidiaries Still Held By Affiliate

1,361

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effective interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

[2]

'

'

'

'

'

'

Stated interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.75%

'

11.75%

'

'

'

'

9.75%

9.75%

[2]

'

10.88%

[2]

'

'

Debt Instrument, Principal Amounts Returned as Dividend to Parent and Cancelled

'

'

'

'

'

'

'

'

'

'

'

'

1,235

'

'

'

'

'

'

6,360

158

'

'

'

'

'

'

'

'

'

3,474

'

119

'

'

'

1,715

'

'

'

Principal Amount Of Affiliate Debt Acquired In Exchange Transaction

'

'

'

'

'

'

'

'

'

'

'

1,310

'

160

'

'

'

'

'

'

'

'

1,761

'

'

95

'

'

'

'

'

'

'

'

'

'

'

'

39

132

Mark-to-market gain reclassified from AOCI

'

284

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other than Temporary Impairment Losses, Investments

'

'

'

'

'

'

$14

$77

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Includes $244 million related to EFH Corp. debt held and $8 million related to TCEH debt held. Income tax effect of $88 million on cash interest received reported as a capital transaction.

[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. Debt."

Membership_Interests_Principal

Membership Interests (Principal Amounts, Coupon Rates, Maturities and Carrying Value) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Stockholders' Equity [Line Items]	'		'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	($1,822)		($179)
Long-Term Debt of Affiliate Held by EFIH [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	635		5,388
Fixed 10.25% Senior Notes due November 1, 2015, Series B [Member] | Senior Notes [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Stated interest rate (as a percent)	10.25%		'
Fixed Series R 6.55% Senior Notes 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		221
Fixed Series R 6.55% Senior Notes due November 15, 2034 [Member] | Senior Notes [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Stated interest rate (as a percent)	6.55%		'
Fixed Series Q 6.50% Senior Notes due November 15, 2024 [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	545		516
Available-for-sale Securities, Fair Value Disclosure	249		260
Fixed Series Q 6.50% Senior Notes due November 15, 2024 [Member] | Senior Notes [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Stated interest rate (as a percent)	6.50%		'
Fixed Series P 5.55% Senior Notes due November 15, 2014 [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	281		279
Available-for-sale Securities, Fair Value Disclosure	185		197
Fixed Series P 5.55% Senior Notes due November 15, 2014 [Member] | Senior Notes [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Stated interest rate (as a percent)	5.55%		'
11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	0		3,441
Available-for-sale Securities, Fair Value Disclosure	0		3,108
10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	0		1,685
Available-for-sale Securities, Fair Value Disclosure	0		1,502
10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member] | Push Down Debt [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Stated interest rate (as a percent)	10.88%	[1]	'
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		13
Debt Securities [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Available-for-Sale Securities, Debt Securities, Principal Amount Outstanding	1,361		6,456
Available-for-sale Securities, Fair Value Disclosure	635		5,301
Accrued Investment Income Receivable	0		87
Minimum [Member] | 11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member] | Push Down Debt [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Effective interest rate (as a percent)	11.25%	[1]	'
Maximum [Member] | 11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member] | Push Down Debt [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Effective interest rate (as a percent)	12.00%	[1]	'
TCEH Corp. [Member] | Series B [Member]	'		'
Stockholders' Equity [Line Items]	'		'
Principal amount	$48		$48
[1]	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. Debt."

Membership_Interests_Membershi

Membership Interests (Membership Interests) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amounts reclassified from accumulated other comprehensive income (loss) and reported in:	'	'	'
Balance at December 31, 2012	$160	'	'
Equity in earnings of unconsolidated subsidiaries	335	270	286
Income tax benefit	169	-27	-73
Total amount reclassified from accumulated other comprehensive income (loss) during the period	-199	147	17
Balance at December 31, 2013	-39	160	'
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'
Amounts reclassified from accumulated other comprehensive income (loss) and reported in:	'	'	'
Balance at December 31, 2012	160	'	'
Other comprehensive loss before reclassifications (after tax) arising in 2013	-16	'	'
Interest income	-284	'	'
Equity in earnings of unconsolidated subsidiaries	2	'	'
Income tax benefit	99	'	'
Total amount reclassified from accumulated other comprehensive income (loss) during the period	-183	'	'
Total change during the period	-199	'	'
Balance at December 31, 2013	-39	'	'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'
Amounts reclassified from accumulated other comprehensive income (loss) and reported in:	'	'	'
Balance at December 31, 2012	-23	'	'
Other comprehensive loss before reclassifications (after tax) arising in 2013	0	'	'
Interest income	0	'	'
Equity in earnings of unconsolidated subsidiaries	2	'	'
Income tax benefit	0	'	'
Total amount reclassified from accumulated other comprehensive income (loss) during the period	2	'	'
Total change during the period	2	'	'
Balance at December 31, 2013	-21	'	'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Changes in Fair Values of Investment in Debt Securities of Affiliates [Member]	'	'	'
Amounts reclassified from accumulated other comprehensive income (loss) and reported in:	'	'	'
Balance at December 31, 2012	185	'	'
Other comprehensive loss before reclassifications (after tax) arising in 2013	0	'	'
Interest income	-284	'	'
Equity in earnings of unconsolidated subsidiaries	0	'	'
Income tax benefit	99	'	'
Total amount reclassified from accumulated other comprehensive income (loss) during the period	-185	'	'
Total change during the period	-185	'	'
Balance at December 31, 2013	0	'	'
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]	'	'	'
Amounts reclassified from accumulated other comprehensive income (loss) and reported in:	'	'	'
Balance at December 31, 2012	-2	'	'
Other comprehensive loss before reclassifications (after tax) arising in 2013	-16	'	'
Interest income	0	'	'
Equity in earnings of unconsolidated subsidiaries	0	'	'
Income tax benefit	0	'	'
Total amount reclassified from accumulated other comprehensive income (loss) during the period	0	'	'
Total change during the period	-16	'	'
Balance at December 31, 2013	($18)	'	'

RelatedParty_Transactions_Narr

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

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

12 Months Ended

12 Months Ended

Aug. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Aug. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Aug. 31, 2012

Sep. 30, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Oct. 31, 2012

Aug. 31, 2012

Feb. 29, 2012

Dec. 31, 2012

Oct. 31, 2012

Aug. 31, 2012

Feb. 29, 2012

Aug. 31, 2012

Feb. 29, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Aug. 31, 2012

Oct. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Aug. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Agreement_settled

Oncor Holdings [Member]

Oncor Holdings [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Goldman, Sachs & Co. [Member]

Oncor [Member]

Oncor [Member]

Payable Attributable To Income Taxes [Member]

Income tax payments [Member]

Income tax payments [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]

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]

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]

Related Party Transactions, Agreement Between Parties to Settle Obligations Under The Note [Member]

Noninterest bearing note payable maturing in 2016 [Member]

Noninterest bearing note payable maturing in 2016 [Member]

Indirect Guarantee of Indebtedness [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

9.75% Fixed Senior Secured First Lien Notes due October 15, 2019 [Member]

10% EFH Corp. Fixed Senior Secured Notes due January 15, 2020 [Member]

10% EFH Corp. Fixed Senior Secured Notes due January 15, 2020 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [Member]

11.75% Senior Secured Second Lien Notes due March 1, 2022 [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]

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]

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]

6.875% Fixed Senior Secured First Lien Notes due August 15, 2017 [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

State and Local Jurisdiction [Member]

Internal Revenue Service (IRS) [Member]

Audit Years 1997 Through 2002 [Member]

Audit Years 1997 Through 2001 [Member]

Minimum [Member]

Subsequent Event [Member]

Oncor [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Related Party Transactions, Agreement Between Parties To Settle Future Reimbursements [Member]

Legal And Consulting Fees [Member]

Legal And Consulting Fees [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Related Party Transactions, Agreement Between Parties To Settle Future Reimbursements [Member]

Collateral posted [Member]

Collateral posted [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Receivable attributable to income taxes [Member]

Receivable attributable to income taxes [Member]

Receivable attributable to income taxes [Member]

Receivable attributable to income taxes [Member]

Oncor [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Line of Credit [Member]

Secured Debt [Member]

Secured Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Receivable attributable to income taxes [Member]

Energy Future Intermediate Holding CO LLC [Member]

Internal Revenue Service (IRS) [Member]

Texas Comptroller Of Public Accounts [Member]

Texas Competitive Electric Holdings Company LLC [Member]

Oncor Holdings [Member]

Oncor [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Oncor [Member]

Oncor [Member]

Oncor [Member]

Oncor Holdings [Member]

Oncor Holdings [Member]

Oncor [Member]

Oncor [Member]

Related Party Transactions, Agreement Between Parties to Settle Obligations Under The Note [Member]

Related Party Transactions, Agreement Between Parties to Settle Obligations Under The Note [Member]

Energy Future Intermediate Holding CO LLC [Member]

Goldman, Sachs & Co. [Member]

Goldman, Sachs & Co. [Member]

Goldman, Sachs & Co. [Member]

Goldman, Sachs & Co. [Member]

Affiliates of KKR and TPG Management, L.P. [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 [Member]

Oncor [Member]

Oncor [Member]

Energy Future Intermediate Holding CO LLC [Member]

Oncor [Member]

TCEH to EFH [Member]

Oncor [Member]

Oncor [Member]

TCEH to EFH [Member]

Goldman, Sachs & Co. [Member]

Goldman, Sachs & Co. [Member]

Goldman, Sachs & Co. [Member]

Oncor [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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$12,000,000

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Tax Expense, Due from Affiliates, Current

'

'

'

34,000,000

35,000,000

5,000,000

1,000,000

'

90,000,000

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

33,000,000

'

'

'

Related Party Transaction, Expenses from Transactions with Related Party

'

'

'

'

'

'

'

'

'

'

'

180,000,000

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Tax Assets, Valuation Allowance

'

110,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, gross

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

698,000,000

'

141,000,000

'

57,000,000

[1]

'

331,000,000

[1]

'

32,000,000

[1]

'

1,750,000,000

'

'

'

'

'

'

'

'

'

'

'

503,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Issuance Cost

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

3,000,000

7,000,000

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long Term Debt And Capital Leases Issued, Principal Amount

'

1,564,000,000

3,557,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

600,000,000

1,150,000,000

'

'

'

'

253,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

600,000,000

1,150,000,000

'

'

'

'

'

250,000,000

'

'

503,000,000

250,000,000

'

'

'

'

'

'

'

'

'

'

Stated interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.75%

'

9.75%

[1]

'

'

'

10.88%

[1]

'

11.75%

'

'

'

'

'

'

'

'

'

'

11.75%

6.88%

'

'

'

6.88%

'

'

'

'

'

'

'

'

'

'

'

'

Effective interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Amounts of Transaction

'

'

'

'

'

'

'

'

'

'

'

'

'

'

159,000,000

'

'

1,000,000,000

1,000,000,000

1,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

27.00%

29.00%

33.00%

'

'

'

'

'

'

Due to Affiliate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

135,000,000

53,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Agreements Related to Securitization (Transition) Bonds Settled

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Decrease in Member Interest, After Tax

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transaction, Decrease in Investment in Unconsolidated Subsidiary, Offsetting Decrease in Equity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Method Investment, Ownership Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

80.03%

'

'

'

'

'

'

80.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

'

'

'

'

'

'

'

'

'

Repayments of Related Party Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

39,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party, Remaining Interest To Be Paid

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

53,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Expense, Related Party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16,000,000

32,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

32,000,000

35,000,000

38,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Public Utilities, Delivery Fee Surcharge Remitted To Related Party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16,000,000

16,000,000

17,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Due to Affiliate, Current

'

'

'

'

'

'

'

'

'

'

18,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,000,000

34,000,000

5,000,000

22,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Due from Affiliate, Current

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,000,000

'

'

'

'

'

Related Party Tax Expense, Due to Affiliates, Current

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,000,000

'

10,000,000

'

'

Related Party, Letter of Credit Posted as Collateral

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,000,000

11,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

170,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

Multiemployer Plans, Collective-Bargaining Arrangement, Liability of Nonrecoverable Portion of Unfunded Obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$20,000,000

[1]

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. Debt."

Supplementary_Financial_Inform2

Supplementary Financial Information (Interest Income Recorded on Securities) (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Open Option Contracts Written [Line Items]	'	'	'	'
Accretion of purchase discount	'	$0	$92	$140
Mark-to-market gain reclassified from AOCI	284	'	'	'
Impairments related to issuer credit	'	0	-14	-77
Total interest	'	284	598	552
Available-for-sale Securities [Member]	'	'	'	'
Open Option Contracts Written [Line Items]	'	'	'	'
Interest received/accrued	'	0	232	178
Accretion of purchase discount	'	0	92	140
PIK interest received/accrued related to EFH Corp. Toggle Notes	'	0	288	308
Mark-to-market gain reclassified from AOCI	'	284	0	3
Impairments related to issuer credit	'	0	-14	-77
Total interest	'	$284	$598	$552

Supplementary_Financial_Inform3

Supplementary Financial Information (Interest Expense and Related Charges) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]	'	'	'
Interest paid/accrued	$630	$434	$264
Interest expense related to pushed down debt	6	75	78
Interest expense on toggle notes payable in additional principal (Note 6)	176	12	0
Amortization of debt exchange premiums	-80	-8	0
Amortization of debt exchange discounts and issuance costs	28	13	6
Interest Expense	$760	$526	$348

Supplementary_Financial_Inform4

Supplementary Financial Information (Supplementary Cash Flow Information) (Details) (USD $)

12 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Jan. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Jan. 31, 2013

Jan. 31, 2013

Jan. 31, 2013

Dec. 31, 2012

Jan. 31, 2013

Push Down Debt [Member]

Secured Debt [Member]

Senior Notes [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [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]

9.75 Senior Secured Notes Due 2019 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

11.25%/ 12.25% Senior Toggle Notes Due 2018 [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

11% Senior Secured Second Lien Notes due October 1, 2021 [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 Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Energy Future Holdings Corp. [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Push Down Debt [Member]

Push Down Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

11.25%/12.25% Senior Toggle Notes due December 1, 2018 [Member]

Senior Notes [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

Secured Debt [Member]

9.75 Senior Secured Notes Due 2019 [Member]

11.25/12.00% EFH Corp. Senior Toggle Notes due November 1, 2017 [Member]

10.875% EFH Corp. Fixed Senior Notes due November 1, 2017 [Member]

10.875% Senior Notes due 2017 [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Secured Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Cash payments (receipts) related to:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest paid

$619

$352

$257

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest received on investments in debt of affiliates (net of tax) (a)

0

[1]

-184

[1]

-184

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income taxes

-5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income taxes

'

180

30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Noncash investing and financing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Receipt of additional EFH Corp. Toggle Notes in lieu of cash interest

0

344

312

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount of toggle notes issued in lieu of cash interest

173

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

23

[2]

22

[2]

33

[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital contribution related to settlement of certain income taxes payable

0

[3]

0

[3]

30

[3]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction of debt pushed down from EFH Corp.

-420

[4]

-282

[4]

-167

[4]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt exchange transactions

14

[5]

457

[5]

22

[5]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Distribution to EFH Corp. of debt held as an investment

-5,778

160

45

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax on interest received on holdings of affiliate debt

-88

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Percentage of principal plus unamortized premium of Parent Merger-related debt guaranteed by subsidiary

'

'

'

50.00%

'

'

50.00%

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal Amount Of Affiliate Debt Given In Exchange Transaction

838

564

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long Term Debt And Capital Leases Issued, Principal Amount

1,564

3,557

'

'

'

'

'

'

1,302

'

'

'

'

89

'

'

1,304

'

'

'

'

'

'

'

'

Principal Amount Of Affiliate Debt Acquired In Exchange Transaction

'

'

'

'

1,310

160

'

'

'

'

139

'

'

'

'

'

'

1,761

432

39

95

113

33

132

31

Long-term debt, gross

'

'

'

'

'

'

'

'

'

$2,180

'

$30

[6]

$32

[6]

'

$1,304

$406

'

'

'

'

'

'

'

'

'

[1]

(a)Interest received in 2013 reported as an increase in membership interests (see Note 8).

[2]

(b)Amounts include cash interest and EFH Toggle Notes issued through the PIK election (at 50%) (see Note 6).

[3]

Reflects noncash settlement of certain income taxes payable arising as a result of the sale of noncontrolling interests in Oncor.

[4]

(d)For the year ended December 31, 2013, represents $838 million principal amount of EFH Corp. debt exchanged (at 50%). For the year ended December 31, 2012, represents $564 million principal amount of EFH Corp. debt exchanged (at 50%). See Note 6.

[5]

For the year ended DecemberB 31, 2013 reflects: $1.302 billion of EFIH debt issued in exchange for $1.310 billion of EFH Corp. and EFIH debt and $89 million of EFIH debt issued in exchange for $95 million of EFH Corp. debt. For the year ended DecemberB 31, 2012 reflects: $1.304 billion of EFIH debt issued in exchange for $1.761 billion of EFH Corp. debt. See Note 6.

[6]

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. Debt."