CMS Energy Corporation Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Accounts receivable and accrued revenue, allowance	$ 22	$ 21
Common stock authorized (in shares)	350.0	350.0
Common stock outstanding (in shares)	298.8	294.4
Series C Preferred Stock Depositary Shares
Preferred stock authorized (in shares)	9.2	9.2
Preferred stock outstanding (in shares)	9.2	9.2

Amount of allowance for credit loss on accounts receivable, classified as current.

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