Consolidated Statements of Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Revenue	$ 2,059	$ 1,953
Operating Expenses
Fuel for electric generation	142	132
Purchased power – related parties	18	19
Maintenance and other operating expenses	354	310
Depreciation and amortization	298	279
General taxes	106	87
Total operating expenses	1,700	1,590
Operating Income	359	363
Other Income (Expense)
Interest income	1	2
Allowance for equity funds used during construction	2	1
Income (loss) from equity method investees	(1)	3
Nonoperating retirement benefits, net	23	24
Other income	1	1
Other expense	(3)	(2)
Total other income	23	29
Interest Charges
Interest on long-term debt	106	100
Other interest expense	16	11
Allowance for borrowed funds used during construction	(1)	0
Total interest charges	121	111
Income Before Income Taxes	261	281
Income Tax Expense	48	40
Net Income	$ 213	$ 241
Basic earnings per average common share (in dollars per share)	$ 0.75	$ 0.86
Diluted earnings per average common share (in dollars per share)	$ 0.75	$ 0.86
Consumers Energy Company
Operating Revenue	$ 1,943	$ 1,855
Operating Expenses
Fuel for electric generation	106	102
Purchased and interchange power	374	378
Purchased power – related parties	18	20
Cost of gas sold	401	377
Maintenance and other operating expenses	319	282
Depreciation and amortization	294	277
General taxes	103	85
Total operating expenses	1,615	1,521
Operating Income	328	334
Other Income (Expense)
Interest income	1	2
Interest and dividend income – related parties	1	0
Allowance for equity funds used during construction	2	1
Nonoperating retirement benefits, net	21	22
Other income	1	1
Other expense	(3)	(2)
Total other income	23	24
Interest Charges
Interest on long-term debt	69	67
Other interest expense	3	5
Allowance for borrowed funds used during construction	(1)	0
Total interest charges	71	72
Income Before Income Taxes	280	286
Income Tax Expense	54	44
Net Income	226	242
Purchased and interchange power
Operating Expenses
Cost of sales	378	382
Cost of gas sold
Operating Expenses
Cost of sales	$ 404	$ 381