Consumers Energy Company Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net Income	$ 176	$ 165	$ 578	$ 666
Retirement Benefits Liability
Amortization of net actuarial loss, net of tax	0	1	1	3
Other Comprehensive Income	0	0	1	7
Comprehensive Income Attributable to CMS Energy	176	165	579	673
Consumers Energy Company
Net Income	178	189	577	745
Retirement Benefits Liability
Amortization of net actuarial loss, net of tax	1	1	1	2
Other Comprehensive Income	1	1	1	2
Comprehensive Income Attributable to CMS Energy	$ 179	$ 190	$ 578	$ 747