Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 0	$ 1
Accounts receivable, net	34	38
Inventories	8	8
Regulatory assets	8	6
Other current assets	4	6
Total current assets	54	59
Property, plant and equipment, net	1,373	1,385
Note receivable from affiliate	28	36
Deferred charges and other assets	46	45
Total Assets	1,501	1,525
Current liabilities
Current portion of debt	5	5
Accounts payable	15	11
Accrued interest	11	4
Accrued taxes, other than income	14	15
Regulatory liabilities	3	9
Contractual deposits	8	4
Accrued other current liabilities	7	3
Total current liabilities	63	51
Long-term liabilities and deferred credits
Long-term debt	640	642
Other long-term liabilities and deferred credits	16	14
Total long-term liabilities and deferred credits	656	656
Total Liabilities	719	707
Commitments and contingencies (Note 6)
Member's equity	771	808
Accumulated other comprehensive income	11	10
Total Member's Equity	782	818
Total Liabilities and Member's Equity	$ 1,501	$ 1,525