Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating Revenue	$ 1,599	$ 1,527	$ 5,044	$ 4,805
Operating Expenses
Fuel for electric generation	150	144	397	386
Purchased power – related parties	21	21	59	64
Maintenance and other operating expenses	366	304	1,002	909
Depreciation and amortization	206	193	689	652
General taxes	67	62	222	209
Total operating expenses	1,305	1,197	4,132	3,846
Operating Income	294	330	912	959
Other Income (Expense)
Interest income	2	3	8	10
Allowance for equity funds used during construction	2	1	4	5
Income (loss) from equity method investees	(1)	3	6	10
Nonoperating retirement benefits, net	22	3	68	10
Other income	1	2	2	4
Other expense	(4)	(2)	(15)	(6)
Total other income	22	10	73	33
Interest Charges
Interest on long-term debt	101	101	304	304
Other interest expense	14	10	35	26
Allowance for borrowed funds used during construction	(1)	0	(2)	(2)
Total interest charges	114	111	337	328
Income Before Income Taxes	202	229	648	664
Income Tax Expense	33	57	98	200
Net Income	169	172	550	464
Income Attributable to Noncontrolling Interests	0	0	1	1
Net Income Available to Common Stockholders	$ 169	$ 172	$ 549	$ 463
Basic earnings per average common share (in dollars per share)	$ 0.60	$ 0.61	$ 1.95	$ 1.65
Diluted earnings per average common share (in dollars per share)	0.59	0.61	1.94	1.65
Dividends declared per common share (in dollars per share)	$ 0.3575	$ 0.3325	$ 1.0725	$ 0.9975
Consumers Energy Company
Operating Revenue	$ 1,502	$ 1,437	$ 4,752	$ 4,536
Operating Expenses
Fuel for electric generation	122	115	310	304
Purchased and interchange power	440	424	1,206	1,124
Purchased power – related parties	22	23	61	67
Cost of gas sold	45	42	530	479
Maintenance and other operating expenses	334	274	914	824
Depreciation and amortization	203	191	681	646
General taxes	65	60	216	203
Total operating expenses	1,231	1,129	3,918	3,647
Operating Income	271	308	834	889
Other Income (Expense)
Interest income	2	2	6	8
Allowance for equity funds used during construction	2	1	4	5
Interest and dividend income – related parties	1	0	1	0
Nonoperating retirement benefits, net	21	3	63	8
Other income	0	1	1	15
Other expense	(4)	(2)	(9)	(6)
Total other income	22	5	66	30
Interest Charges
Interest on long-term debt	69	66	203	198
Other interest expense	5	4	14	11
Allowance for borrowed funds used during construction	(1)	0	(2)	(2)
Total interest charges	73	70	215	207
Income Before Income Taxes	220	243	685	712
Income Tax Expense	40	62	111	216
Net Income	180	181	574	496
Preferred Stock Dividends	0	0	1	1
Net Income Available to Common Stockholders	180	181	573	495
Purchased and interchange power
Operating Expenses
Cost of sales	447	426	1,222	1,132
Cost of gas sold
Operating Expenses
Cost of sales	$ 48	$ 47	$ 541	$ 494