Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Electric	$ 2,170	$ 1,845	$ 1,961
Gas	525	427	443
Total revenues	2,695	2,272	2,404
Expenses
Fuel	604	340	516
Purchased power	106	83	49
Cost of natural gas sold	155	121	152
Operations & maintenance	566	542	543
Depreciation and amortization	430	384	377
Taxes, other than income	228	202	206
Total expenses	2,089	1,672	1,843
Income from operations	606	600	561
Other income
Allowance for other funds used during construction	45	30	11
Other income, net	5	6	9
Total other income	50	36	20
Interest charges
Interest expense	151	144	139
Allowance for borrowed funds used during construction	(21)	(14)	(5)
Total interest charges	130	130	134
Income before provision for income taxes	526	506	447
Provision for income taxes	80	82	77
Net income	446	424	370
Other comprehensive income, net of tax
Comprehensive income	$ 446	$ 424	$ 370