Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Property, plant and equipment
Utility plant, at original costs	$ 10,171	$ 10,019
Construction work in progress	250	892
Accumulated depreciation	(2,891)	(2,826)
Utility plant, net	7,280	7,193
Other property	11	10
Total property, plant and equipment, net	7,291	7,203
Current assets
Cash and cash equivalents	15	10
Receivables, less allowance for uncollectibles of $1 at both June 30, 2017 and December 31, 2016	236	206
Due from affiliates	3	7
Inventories, at average cost
Derivative assets	1	15
Regulatory assets	26	28
Prepayments and other current assets	26	21
Total current assets	486	450
Deferred debits
Regulatory assets	400	393
Other	37	37
Total deferred debits	437	430
Total assets	8,214	8,083
Capitalization
Common stock	2,513	2,456
Accumulated other comprehensive loss	(2)	(3)
Retained earnings	344	311
Total capital	2,855	2,764
Long-term debt	1,859	2,163
Total capitalization	4,714	4,927
Current liabilities
Long term debt due within one year	304	0
Notes payable	298	170
Accounts payable	158	262
Due to affiliates	11	25
Customer deposits	135	146
Regulatory liabilities	87	154
Accrued interest	18	16
Accrued taxes	49	12
Other	10	11
Total current liabilities	1,070	796
Deferred credits
Deferred income taxes	1,476	1,407
Investment tax credits	22	11
Regulatory liabilities	575	591
Deferred credits and other liabilities	357	351
Total deferred credits	2,430	2,360
Commitments and Contingencies (see Note 8)
Total liabilities and capitalization	8,214	8,083
Fuel [Member]
Inventories, at average cost
Utility inventories	84	77
Materials and Supplies [Member]
Inventories, at average cost
Utility inventories	95	86
Electric [Member]
Property, plant and equipment
Utility plant, at original costs	8,374	7,624
Gas [Member]
Property, plant and equipment
Utility plant, at original costs	$ 1,547	$ 1,503