v3.25.4

Stock-based Compensation (Schedule of Amounts Related to Restricted Stock Awards and Restricted Stock Units) (Details) - Restricted stock - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares that vested during the year	$ 33	$ 28	$ 20
Compensation expense recognized	25	27	28
Income tax benefit recognized	2	3	3
Consumers Energy Company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares that vested during the year	32	27	19
Compensation expense recognized	23	25	26
Income tax benefit recognized	$ 2	$ 3	$ 2

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