CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 64	$ 2
Accounts receivable, net	74	84
Accrued unbilled revenues	51	74
Other receivables	0	19
Inventories	29	39
Regulatory assets	28	44
Prepaid taxes	22	27
Prepayments and other	6	11
Total current assets	274	300
Property, Plant and Equipment, Net [Abstract]
Property, plant and equipment, net	3,155	2,914
Other assets
Regulatory assets	181	193
Other	3	3
Total other assets	184	196
Total assets	3,613	3,410
Current liabilities
Current portion of long-term debt	200	0
Short-term debt	0	47
Dividends payable to parent	24	23
Regulatory liabilities	47	21
Taxes accrued	20	13
Accrued interest	13	12
Other	20	28
Total current liabilities	420	255
Deferred credits and other liabilities
Deferred income taxes	324	333
Deferred investment tax credits	5	5
Regulatory liabilities	417	383
Customer advances	25	23
Pension and employee benefit obligations	22	23
Other	42	43
Total deferred credits and other liabilities	835	810
Commitments and contingencies
Capitalization
Long-term debt	1,011	1,086
Common stock — 1,000,000 shares authorized of $100 par value; 933,000 shares outstanding at Sept. 30, 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	$ 820	$ 761
Retained earnings	434	405
Total common stockholder's equity	1,347	1,259
Total liabilities and equity	3,613	3,410
Related Party
Current liabilities
Accounts payable	70	92
Affiliated Entity
Current liabilities
Accounts payable	$ 26	$ 19