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

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant