CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents ($220 and $109 related to VIEs at December 31, 2011 and March 31, 2012, respectively)	$ 995	$ 220
Accounts and notes receivable, net ($52 and $64 related to VIEs at December 31, 2011 and March 31, 2012, respectively)	208	201
Accounts and notes receivable—affiliated companies	22	1,027
Accrued unbilled revenues	62	72
Inventory	83	80
Taxes receivable	0	2
Deferred tax asset	3	3
Other ($42 and $56 related to VIEs at December 31, 2011 and March 31, 2012, respectively)	76	65
Total current assets	1,449	1,670
Property, Plant and Equipment:
Property, plant and equipment	7,927	7,827
Less accumulated depreciation and amortization	2,812	2,784
Property, Plant and Equipment, net	5,115	5,043
Other Assets:
Regulatory assets ($2,289 and $3,899 related to VIEs at December 31, 2011 and March 31, 2012, respectively)	3,646	3,726
Notes receivable—affiliated companies	750	750
Other	44	35
Total other assets	4,440	4,511
Total Assets	11,004	11,224
Current Liabilities:
Current portion of VIE transition and system restoration bonds long-term debt	380	307
Current portion of other long-term debt	496	46
Accounts payable	85	113
Accounts and notes payable—affiliated companies	31	32
Taxes accrued	62	101
Interest accrued	47	96
Other	90	98
Total current liabilities	1,191	793
Other Liabilities:
Accumulated deferred income taxes, net	2,137	2,113
Benefit obligations	251	252
Regulatory liabilities	460	441
Notes payable—affiliated companies	151	151
Other	45	78
Total other liabilities	3,044	3,035
Long-Term Debt:
VIE transition and system restoration bonds	3,686	2,215
Other	1,597	2,047
Total long-term debt	5,283	4,262
Commitments And Contingencies (Note 8)
Member’s Equity:
Common stock	0	0
Paid-in capital	1,231	1,230
Retained earnings	255	1,904
Total member’s equity	1,486	3,134
Total Liabilities and Member’s Equity	$ 11,004	$ 11,224