CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 2	$ 1
Accounts receivable, net	354	542
Accrued unbilled revenue	66	253
Accounts and notes receivable - affiliated companies	9	17
Materials and supplies	88	86
Inventory	93	187
Non-trading derivative assets	67	87
Taxes receivable	2	1
Deferred income tax assets	7	8
Prepaid expenses and other current assets	166	122
Total current assets	854	1,304
Property, Plant and Equipment:
Property, plant and equipment	8,831	8,519
Less accumulated depreciation and amortization	1,596	1,489
Property, plant and equipment, net	7,235	7,030
Other Assets:
Goodwill	1,696	1,696
Non-trading derivative assets	22	20
Investment in unconsolidated affiliates	476	472
Other	184	165
Total other assets	2,378	2,353
Total Assets	10,467	10,687
Current Liabilities:
Short-term borrowings	30	62
Current portion of long-term debt	365	0
Accounts payable	227	427
Accounts and notes payable - affiliated companies	447	419
Taxes accrued	80	82
Interest accrued	48	48
Customer deposits	76	74
Non-trading derivative liabilities	27	46
Other	128	157
Total current liabilities	1,428	1,315
Other Liabilities:
Accumulated deferred income taxes, net	1,548	1,420
Non-trading derivative liabilities	14	6
Benefit obligations	108	108
Regulatory liabilities	618	597
Other	227	232
Total other liabilities	2,515	2,363
Long-term Debt	2,272	2,919
Commitments and Contingencies (Note 9)
Stockholder’s Equity:
Common stock	0	0
Paid-in capital	2,418	2,416
Retained earnings	1,841	1,681
Accumulated other comprehensive loss	(7)	(7)
Total stockholder’s equity	4,252	4,090
Total Liabilities and Stockholder's Equity	$ 10,467	$ 10,687