Consumers Energy Company Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating Revenue	$ 1,673	$ 2,024	$ 5,512	$ 6,318
Operating Expenses
Operating Income	271	258	829	953
Other Income (Expense)
Non-operating retirement benefits, net	45	54	135	154
Other income	34	5	152	11
Other expense	(2)	(5)	(8)	(20)
Total other income	77	54	279	145
Interest Charges
Interest on long-term debt	158	127	454	370
Allowance for borrowed funds used during construction	(1)	0	(2)	(1)
Total interest charges	164	130	471	380
Income Before Income Taxes	184	182	637	718
Income Tax Expense	11	19	81	72
Net Income Attributable to CMS Energy	176	165	578	666
Preferred Stock Dividends	2	2	7	7
Net Income Available to Common Stockholders	174	163	571	659
Related Party
Interest Charges
Other interest expense	3	3	9	9
Nonrelated Party
Interest Charges
Other interest expense	4	0	10	2
Consumers Energy Company
Operating Revenue	1,596	1,886	5,291	5,971
Operating Expenses
Fuel for electric generation	131	233	314	530
Purchased and interchange power	364	556	1,024	1,461
Purchased power – related parties	21	21	57	56
Cost of gas sold	41	114	670	792
Maintenance and other operating expenses	425	393	1,214	1,076
Depreciation and amortization	250	233	839	802
General taxes	90	84	323	299
Total operating expenses	1,322	1,634	4,441	5,016
Operating Income	274	252	850	955
Other Income (Expense)
Non-operating retirement benefits, net	43	52	128	146
Other income	13	4	40	12
Other expense	(3)	(5)	(8)	(19)
Total other income	53	51	160	139
Interest Charges
Interest on long-term debt	106	81	306	231
Allowance for borrowed funds used during construction	(1)	0	(2)	(1)
Total interest charges	114	85	326	241
Income Before Income Taxes	213	218	684	853
Income Tax Expense	35	29	107	108
Net Income Attributable to CMS Energy	178	189	577	745
Preferred Stock Dividends	0	0	1	1
Net Income Available to Common Stockholders	178	189	576	744
Consumers Energy Company | Related Party
Interest Charges
Other interest expense	6	3	13	9
Consumers Energy Company | Nonrelated Party
Interest Charges
Other interest expense	$ 3	$ 1	$ 9	$ 2