Consolidated Balance Sheets Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 12	$ 23
Accounts receivable, net	620	701
Income taxes receivable	60	133
Inventories:
Materials and supplies	226	218
Fuel	186	199
Deferred income taxes	53	28
Regulatory assets	124	131
Other current assets	76	92
Total current assets	1,357	1,525
Property, plant and equipment, net	18,783	18,719
Regulatory assets	1,608	1,574
Other assets	424	449
Total assets	22,172	22,267
Current liabilities:
Accounts payable	418	465
Accrued employee expenses	109	76
Accrued interest	104	110
Accrued property and other taxes	85	59
Short-term debt	210	20
Current portion of long-term debt and capital lease obligations	179	134
Regulatory liabilities	34	34
Other current liabilities	216	222
Total current liabilities	1,355	1,120
Regulatory liabilities	919	910
Long-term debt and capital lease obligations	6,874	6,919
Deferred income taxes	4,623	4,609
Other long-term liabilities	961	953
Total liabilities	14,732	14,511
Commitments and contingencies (Note 8)
Shareholders' equity:
Preferred stock	2	2
Common stock - 750 shares authorized, no par value, 357 shares issued and outstanding	0	0
Additional paid-in capital	4,479	4,479
Retained earnings	2,972	3,288
Accumulated other comprehensive loss, net	(13)	(13)
Total shareholders' equity	7,440	7,756
Total liabilities and shareholders' equity	$ 22,172	$ 22,267