CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 81	$ 2
Accounts receivable, net	80	84
Accrued unbilled revenues	50	74
Other receivables	12	19
Inventories	24	39
Regulatory assets	32	44
Prepaid taxes	28	27
Prepayments and other	5	11
Total current assets	312	300
Property, Plant and Equipment, Net [Abstract]
Property, plant and equipment, net	3,055	2,914
Other assets
Regulatory assets	187	193
Other	3	3
Total other assets	190	196
Total assets	3,557	3,410
Current liabilities
Current portion of long-term debt	200	0
Short-term debt	0	47
Accounts payable	58	92
Dividends payable to parent	25	23
Regulatory liabilities	28	21
Taxes accrued	17	13
Accrued interest	12	12
Other	20	28
Total current liabilities	381	255
Deferred credits and other liabilities
Deferred income taxes	331	333
Deferred investment tax credits	5	5
Regulatory liabilities	415	383
Customer advances	24	23
Pension and employee benefit obligations	21	23
Other	43	43
Total deferred credits and other liabilities	839	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 June 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	$ 806	$ 761
Retained earnings	427	405
Total common stockholder's equity	1,326	1,259
Total liabilities and equity	3,557	3,410
Accounts payable	58	92
Related Party
Current liabilities
Accounts payable	21	19
Accounts payable	$ 21	$ 19