CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 1	$ 2
Accounts receivable, net	92	84
Accrued unbilled revenues	53	74
Other receivables	14	19
Inventories	23	39
Regulatory assets	37	44
Prepaid taxes	21	27
Prepayments and other	8	11
Total current assets	249	300
Property, Plant and Equipment, Net [Abstract]
Property, plant and equipment, net	2,971	2,914
Other assets
Regulatory assets	189	193
Other	3	3
Total other assets	192	196
Total assets	3,412	3,410
Current liabilities
Short-term debt	12	47
Accounts payable	58	92
Accounts payable to affiliates	26	19
Dividends payable to parent	24	23
Regulatory liabilities	26	21
Taxes accrued	22	13
Accrued interest	10	12
Other	20	28
Total current liabilities	198	255
Deferred credits and other liabilities
Deferred income taxes	334	333
Deferred investment tax credits	5	5
Regulatory liabilities	393	383
Customer advances	23	23
Pension and employee benefit obligations	20	23
Other	42	43
Total deferred credits and other liabilities	817	810
Commitments and contingencies
Capitalization
Long-term debt	1,087	1,086
Common stock — 1,000,000 shares authorized of $100 par value; 933,000 shares outstanding at March 31, 2023 and Dec. 31, 2022, respectively	$ 93	$ 93
Common stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 100	$ 100
Common stock, shares outstanding (in shares)	933,000	933,000
Additional paid in capital	$ 791	$ 761
Retained earnings	426	405
Total common stockholder's equity	1,310	1,259
Total liabilities and equity	$ 3,412	$ 3,410