Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Property, plant and equipment
Utility plant, at original costs	$ 14,053	$ 13,818
Accumulated depreciation	(3,792)	(3,712)
Utility plant, net	10,261	10,106
Other property	14	14
Total property, plant and equipment, net	10,275	10,120
Current assets
Cash and cash equivalents	14	10
Receivables, less allowance for credit losses of $7 and $7 at March 31, 2021 and December 31, 2020, respectively	225	219
Due from affiliates	8	11
Inventories, at average cost
Regulatory assets	64	79
Prepayments and other current assets	15	10
Total current assets	456	462
Deferred debits
Regulatory assets	416	406
Other	61	60
Total deferred debits	477	466
Total assets	11,208	11,048
Capitalization
Common stock	4,045	3,890
Accumulated other comprehensive loss	(1)	(1)
Retained earnings	331	327
Total capital	4,375	4,216
Long-term debt	3,386	2,594
Total capitalization	7,761	6,810
Current liabilities
Long-term debt due within one year	278	278
Notes payable	10	775
Accounts payable	247	321
Due to affiliates	45	46
Customer deposits	130	130
Regulatory liabilities	62	67
Accrued interest	45	13
Accrued taxes	40	22
Other	48	57
Total current liabilities	905	1,709
Long-term liabilities
Deferred income taxes	789	783
Regulatory liabilities	1,190	1,194
Investment tax credits	237	216
Deferred credits and other liabilities	326	336
Total long-term liabilities	2,542	2,529
Commitments and Contingencies (see Note 8)
Total liabilities and capitalization	11,208	11,048
Fuel [Member]
Inventories, at average cost
Utility inventories	22	26
Materials and Supplies [Member]
Inventories, at average cost
Utility inventories	108	107
Electric [Member]
Property, plant and equipment
Utility plant, at original costs	11,646	11,486
Gas [Member]
Property, plant and equipment
Utility plant, at original costs	$ 2,407	$ 2,332