CMS Energy Corporation Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Revenue	$ 8,596	$ 7,329	$ 6,418
Operating Expenses
Fuel for electric generation	905	593	375
Purchased power – related parties	76	77	64
Maintenance and other operating expenses	1,669	1,610	1,280
Depreciation and amortization	1,126	1,114	1,043
General taxes	412	389	357
Total operating expenses	7,372	6,183	5,188
Operating Income	1,224	1,146	1,230
Other Income (Expense)
Non-operating retirement benefits, net	205	165	118
Other income	19	30	28
Other expense	(27)	(18)	(62)
Total other income	197	177	84
Interest Charges
Interest on long-term debt	509	481	483
Interest expense – related parties	12	12	12
Other interest expense	0	10	12
Allowance for borrowed funds used during construction	(2)	(3)	(2)
Total interest charges	519	500	505
Income Before Income Taxes	902	823	809
Income Tax Expense	93	95	115
Income From Continuing Operations	809	728	694
Income From Discontinued Operations, Net of Tax of $1, $170, and $18	4	602	58
Net Income	813	1,330	752
Loss Attributable to Noncontrolling Interests	(24)	(23)	(3)
Net Income Attributable to CMS Energy	837	1,353	755
Preferred Stock Dividends	10	5	0
Net Income Available to Common Stockholders	$ 827	$ 1,348	$ 755
Basic Earnings Per Average Common Share
Basic earnings per average common share, income from continuing operations per average common share available to common stockholders (in dollars per share)	$ 2.84	$ 2.58	$ 2.45
Basic earnings per average common share, income from discontinued operations per average common share available to common stockholders (in dollars per share)	0.01	2.08	0.20
Basic earnings per average common share (in dollars per share)	2.85	4.66	2.65
Diluted Earnings Per Average Common Share
Diluted earnings per average common share, income from continuing operations per average common share available to common stockholders (in dollars per share)	2.84	2.58	2.44
Diluted earnings per average common share, income from discontinued operations per average common share available to common stockholders (in dollars per share)	0.01	2.08	0.20
Diluted earnings per average common share (in dollars per share)	$ 2.85	$ 4.66	$ 2.64
Purchased and interchange power
Operating Expenses
Cost of goods and services sold	$ 1,928	$ 1,665	$ 1,492
Cost of gas sold
Operating Expenses
Cost of goods and services sold	$ 1,256	$ 735	$ 577