Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 294	$ 257
Accounts receivable, net	273	271
Inventories	75	72
Regulatory assets - current	14	23
Other current assets	243	98
Total current assets	899	721
Electric utility plant, net	7,773	7,539
Regulatory assets - noncurrent	567	569
Nuclear decommissioning trust	43	45
Non-qualified benefit plan trust	44	42
Other noncurrent assets	216	153
Total assets	9,542	9,069
Current liabilities
Accounts payable	201	153
Liabilities from price risk mangement activities - current	39	14
Short-term debt	0	150
Current portion of long-term debt	0	160
Current portion of finance lease obligation	16	16
Accrued expenses and other current liabilities	611	322
Total current liabilities	867	815
Long-term debt, net of current portion	3,285	2,886
Regulatory liabilities-noncurrent	1,370	1,369
Deferred income taxes	419	374
Unfunded status of pension and psotretirement plans	299	299
Liabilities from price risk management activities-noncurrent	89	136
Asset retirement obligations	241	270
Non-qualified benefit plan liabilities	97	101
Finance lease obligations, net of current portion	125	129
Other noncurrent liabilities	75	77
Total liabilities	6,867	6,456
Commitments and contingencies (see notes)
Shareholders' Equity:
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding as of September 30, 2021 and December 31, 2020	0	0
Common stock, no par value, 160,000,000 shares authorized; 89,409,012 and 89,537,331 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	1,237	1,231
Accumulated other comprehensive loss	(10)	(11)
Retained earnings	1,448	1,393
Total shareholders' equity	2,675	2,613
Total liabilities and shareholders' equity	$ 9,542	$ 9,069