Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Electric	$ 2,519	$ 2,170	$ 1,845
Gas	650	525	427
Total revenues	3,169	2,695	2,272
Expenses
Fuel	676	604	340
Purchased power	151	106	83
Cost of natural gas sold	257	155	121
Operations & maintenance	619	566	542
Depreciation and amortization	436	430	384
Taxes, other than income	257	228	202
Total expenses	2,396	2,089	1,672
Income from operations	773	606	600
Other income
Allowance for other funds used during construction	35	45	30
Other income, net	20	5	6
Total other income	55	50	36
Interest charges
Interest expense	178	151	144
Allowance for borrowed funds used during construction	(11)	(21)	(14)
Total interest charges	167	130	130
Income before provision for income taxes	661	526	506
Provision for income taxes	121	80	82
Net income	540	446	424
Other comprehensive income, net of tax
Comprehensive income	$ 540	$ 446	$ 424