Consolidated Statements of Financial Position (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 49	$ 30
Restricted cash, principally Securitization	45	102
Accounts receivable (less allowance for doubtful accounts of $31 and $35, respectively)
Customer	726	697
Affiliates	1	5
Other	41	63
Inventories
Fuel and gas	192	246
Materials and supplies	194	193
Notes receivable
Other	2	2
Regulatory assets	155	162
Other	104	77
Total Current Assets	1,509	1,577
Investments
Nuclear decommissioning trust funds	1,083	1,037
Other	140	133
Total Investments	1,223	1,170
Property
Property, plant and equipment	17,857	17,689
Less accumulated depreciation and amortization	(6,811)	(6,717)
Property, plant and equipment, net	11,046	10,972
Other Assets
Regulatory assets	3,024	3,348
Securitized regulatory assets	369	413
Intangible assets	32	30
Notes receivable	3	3
Other	143	138
Total Noncurrent Assets	3,571	3,932
Total Assets	17,349	17,651
Accounts payable
Affiliates	65	52
Accounts payable	282	350
Accrued interest	70	61
Current portion long-term debt, including capital leases	466	443
Regulatory liabilities	116	66
Short-term borrowing - affiliates	51	80
Short-term borrowing - other	0	130
Other	162	166
Total Current Liabilities	1,212	1,348
Long-Term Debt (net of current portion)
Mortgage bonds, notes and other	4,531	4,221
Securitization bonds	201	302
Capital lease obligations	1	1
Total Long-Term Debt (net of current portion)	4,733	4,524
Other Liabilities
Deferred income taxes	2,781	2,761
Regulatory liabilities	455	483
Asset retirement obligations	1,581	1,557
Unamortized investment tax credit	47	49
Nuclear decommissioning	165	159
Accrued pension liability — affiliates	1,276	1,368
Accrued postretirement liability — affiliates	661	996
Other	104	103
Total Noncurrent Liabilities	7,070	7,476
Shareholder’s Equity
Common stock, $10 par value, 400,000,000 shares authorized, and 138,632,324 shares issued and outstanding	3,196	3,196
Retained earnings	1,160	1,129
Accumulated other comprehensive loss	(22)	(22)
Total Shareholder's Equity	4,334	4,303
Total Liabilities and Shareholder's Equity	$ 17,349	$ 17,651