Consumers Energy Company Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net Income	$ 1,003	$ 887	$ 837
Retirement Benefits Liability
Net gain arising during the period	2	5	1
Amortization of net actuarial loss	2	2	4
Other Comprehensive Income	5	6	7
Comprehensive Income	1,008	893	844
Consumers Energy Company
Net Income	1,009	867	945
Retirement Benefits Liability
Net gain arising during the period	3	(1)	15
Amortization of net actuarial loss	1	1	2
Other Comprehensive Income	4	0	17
Comprehensive Income	$ 1,013	$ 867	$ 962