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