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