CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents ($207 and $266 related to VIEs at December 31, 2013 and 2012, respectively)	$ 207	$ 646
Accounts and notes receivable, net ($60 and $68 related to VIEs at December 31, 2013 and 2012, respectively)	261	222
Accounts and notes receivable—affiliated companies	5	448
Accrued unbilled revenues	87	80
Inventory	105	94
Taxes receivable	0	7
Deferred tax asset	3	1
Other ($41 and $54 related to VIEs at December 31, 2013 and 2012, respectively)	65	77
Total current assets	733	1,575
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, net	5,834	5,365
Other Assets:
Regulatory assets ($3,179 and $3,545 related to VIEs at December 31, 2013 and 2012, respectively)	2,999	3,388
Notes receivable—affiliated companies	0	750
Other	43	41
Total other assets	3,042	4,179
Total Assets	9,609	11,119
Current Liabilities:
Current portion of VIE transition and system restoration bonds long-term debt	354	447
Current portion of other long-term debt	0	450
Accounts payable	137	83
Accounts and notes payable—affiliated companies	80	92
Taxes accrued	144	95
Interest accrued	75	87
Other	128	112
Total current liabilities	918	1,366
Other Liabilities:
Deferred Tax Liabilities, Net, Noncurrent	2,035	2,097
Benefit obligations	227	268
Regulatory liabilities	509	473
Notes payable—affiliated companies	0	151
Other	46	40
Total other liabilities	2,817	3,029
Long-Term Debt:
VIE transition and system restoration bonds	3,046	3,400
Other	1,595	1,595
Total long-term debt	4,641	4,995
Commitments And Contingencies (Note 10)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Member’s Equity	1,233	1,729
Total Liabilities and Member’s Equity	$ 9,609	$ 11,119