Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 165	$ 52
Accounts receivable, net	398	329
Inventories, at average cost:
Materials and supplies	63	51
Fuel	32	27
Regulatory assets--current	54	24
Other current assets	498	205
Total current assets	1,210	688
Electric utility plant:
In service	12,421	11,838
Accumulated depreciation and amortization	(4,423)	(4,146)
In service, net	7,998	7,692
Public Utilities, Property, Plant and Equipment, Net	8,465	8,005
Construction work-in-progress	467	313
Regulatory assets--noncurrent	473	533
Nuclear decommissioning trust	39	47
Non-qualified benefit plan trust	38	45
Other noncurrent assets	234	176
Total assets	10,459	9,494
Current liabilities:
Accounts payable	457	244
Liabilities from price risk management activities-current	118	47
Current portion of long-term debt	260	0
Current portion of long-term debt	20	20
Accrued expenses and other current liabilities	641	457
Total current liabilities	1,496	768
Long-term debt, net of current portion	3,386	3,285
Regulatory liabilities--noncurrent	1,389	1,360
Deferred income taxes	439	413
Unfunded status of pension and postretirement plans	170	206
Liabilities from price risk management activities--noncurrent	75	90
Asset retirement obligations	257	238
Non-qualified benefit plan liabilities	83	95
Finance lease obligations, net of current portion	294	273
Other noncurrent liabilities	91	59
Total liabilities	7,680	6,787
Commitments and Contingencies (see notes)
Shareholders’ equity:
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding	0	0
Common stock, no par value, 160,000,000 shares authorized; 89,283,353 and 89,410,612 shares issued and outstanding as of December 31, 2022 and 2021, respectively	1,249	1,241
Accumulated other comprehensive loss	(4)	(10)
Retained earnings	1,534	1,476
Total shareholders' equity	2,779	2,707
Total liabilities and shareholders' equity	$ 10,459	$ 9,494
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Authorized	30,000,000	30,000,000
Preferred Stock, No Par Value	$ 0	$ 0
Common Stock, Shares, Outstanding	89,283,353	89,410,612
Common Stock, Shares, Issued	89,283,353	89,410,612
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	160,000,000	160,000,000