Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating Revenue	$ 1,558	$ 1,382	$ 3,571	$ 3,184
Operating Expenses
Fuel for electric generation	116	63	254	166
Purchased power – related parties	17	14	35	32
Maintenance and other operating expenses	355	316	666	604
Depreciation and amortization	244	222	582	537
General taxes	87	75	209	188
Total operating expenses	1,306	1,134	2,889	2,601
Operating Income	252	248	682	583
Other Income (Expense)
Interest income	1	1	2	2
Interest and dividend income – related parties	0	0	0	7
Allowance for equity funds used during construction	2	2	3	3
Income (loss) from equity method investees	2	(2)	4	1
Non-operating retirement benefits, net	40	30	81	61
Other income	5	2	6	2
Other expense	(2)	(1)	(4)	(5)
Total other income	48	32	92	71
Interest Charges
Interest on long-term debt	120	121	239	237
Interest expense – related parties	3	3	6	6
Other interest expense	2	3	5	6
Allowance for borrowed funds used during construction	0	0	(1)	(1)
Total interest charges	125	127	249	248
Income Before Income Taxes	175	153	525	406
Income Tax Expense	22	24	64	48
Income From Continuing Operations	153	129	461	358
Income From Discontinued Operations, Net of Tax of $7, $3, $16, and $6	18	8	52	22
Net Income	171	137	513	380
Income (Loss) Attributable to Noncontrolling Interests	(5)	1	(12)	1
Net Income Available to Common Stockholders	$ 176	$ 136	$ 525	$ 379
Basic earnings per average common share, income from continuing operations per average common share available to common stockholders (in dollars per share)	$ 0.55	$ 0.45	$ 1.64	$ 1.25
Basic earnings per average common share, income from discontinued operations per average common share available to common stockholders (in dollars per share)	0.06	0.03	0.18	0.08
Basic earnings per average common share (in dollars per share)	0.61	0.48	1.82	1.33
Diluted earnings per average common share, income from continuing operations per average common share available to common stockholders (in dollars per share)	0.55	0.45	1.64	1.25
Diluted earnings per average common share, income from discontinued operations per average common share available to common stockholders (in dollars per share)	0.06	0.03	0.18	0.08
Diluted earnings per average common share (in dollars per share)	$ 0.61	$ 0.48	$ 1.82	$ 1.33
Consumers Energy Company
Operating Revenue	$ 1,493	$ 1,330	$ 3,430	$ 3,074
Operating Expenses
Fuel for electric generation	87	43	193	122
Purchased and interchange power	383	354	750	701
Purchased power – related parties	17	14	35	32
Cost of gas sold	94	80	372	350
Maintenance and other operating expenses	339	302	631	580
Depreciation and amortization	234	218	563	530
General taxes	82	73	200	184
Total operating expenses	1,236	1,084	2,744	2,499
Operating Income	257	246	686	575
Other Income (Expense)
Interest income	0	1	1	2
Interest and dividend income – related parties	2	1	3	2
Allowance for equity funds used during construction	2	2	3	3
Non-operating retirement benefits, net	38	28	76	57
Other income	5	2	6	2
Other expense	(2)	(2)	(4)	(5)
Total other income	45	32	85	61
Interest Charges
Interest on long-term debt	73	77	146	151
Interest expense – related parties	3	3	6	6
Other interest expense	2	2	4	5
Allowance for borrowed funds used during construction	0	0	(1)	(1)
Total interest charges	78	82	155	161
Income Before Income Taxes	224	196	616	475
Income Tax Expense	34	36	90	80
Net Income	190	160	526	395
Preferred stock dividends	1	1	1	1
Net Income Available to Common Stockholders	189	159	525	394
Purchased and interchange power
Operating Expenses
Cost of goods and services sold	391	362	768	719
Cost of gas sold
Operating Expenses
Cost of goods and services sold	$ 96	$ 82	$ 375	$ 355