Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 168	$ 126
Accounts receivable, net	376	227
Inventories	72	73
Regulatory assets	62	81
Deferred income taxes	128	152
Other current assets	38	39
Total current assets	844	698
Property, plant and equipment, net	6,966	6,992
Regulatory assets	1,008	1,057
Other assets	87	88
Total assets	8,905	8,835
Current liabilities:
Accounts payable	228	240
Accrued interest	60	61
Accrued property, income and other taxes	27	29
Accrued employee expenses	15	6
Regulatory liabilities	60	74
Current portion of long-term debt	259	22
Customer deposits and other	89	74
Total current liabilities	738	506
Long-term debt	3,316	3,555
Regulatory liabilities	322	312
Deferred income taxes	1,312	1,298
Other long-term liabilities	258	274
Total liabilities	5,946	5,945
Commitments and contingencies (Note 9)
Shareholder's equity:
Common stock - $1.00 stated value, 1,000 shares authorized, issued and outstanding	0	0
Other paid-in capital	2,308	2,308
Retained earnings	654	586
Accumulated other comprehensive loss, net	(3)	(4)
Total shareholder's equity	2,959	2,890
Total liabilities and shareholder's equity	$ 8,905	$ 8,835