CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 5	$ 1
Accounts receivable, less bad debt reserve of $23 and $25, respectively	486	565
Accrued unbilled revenue	83	311
Accounts and notes receivable — affiliated companies	171	44
Materials and supplies	41	34
Natural gas inventory	140	145
Non-trading derivative assets	26	24
Taxes receivable	0	18
Deferred income tax assets	16	21
Prepaid expenses and other current assets	93	51
Total current assets	1,061	1,214
Property, Plant and Equipment:
Property, plant and equipment	5,052	4,815
Less: accumulated depreciation and amortization	1,460	1,379
Property, plant and equipment, net	3,592	3,436
Other Assets:
Goodwill	840	840
Non-trading derivative assets	12	10
Investment in unconsolidated affiliates	4,517	4,518
Notes receivable from unconsolidated affiliates	363	363
Other	145	161
Total other assets	5,877	5,892
Total Assets	10,530	10,542
Current Liabilities:
Short-term borrowings	42	43
Accounts payable	326	495
Accounts and notes payable — affiliated companies	69	103
Taxes accrued	42	74
Interest accrued	36	36
Customer deposits	78	78
Non-trading derivative liabilities	12	17
Other	155	163
Total current liabilities	760	1,009
Other Liabilities:
Deferred Tax Liabilities, Net, Noncurrent	2,195	2,082
Non-trading derivative liabilities	2	4
Benefit obligations	103	102
Regulatory liabilities	685	642
Other	156	160
Total other liabilities	3,141	2,990
Long-Term Debt	2,125	2,240
Commitments and Contingencies (Note 10)
Stockholder’s Equity:
Common stock	0	0
Paid-in capital	2,417	2,416
Retained earnings	2,082	1,882
Accumulated other comprehensive income	5	5
Total stockholder’s equity	4,504	4,303
Total Liabilities and Stockholder’s Equity	$ 10,530	$ 10,542