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CMS Energy Corporation Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Accounts receivable and accrued revenue, allowance $ 26 $ 20
Common stock authorized (in shares) 350,000,000.0 350,000,000.0
Common stock outstanding (in shares) 290,300,000 289,800,000
Series C Preferred Stock Depositary Shares    
Preferred stock authorized (in shares) 9,200,000 9,200,000
Preferred stock outstanding (in shares) 9,200,000 9,200,000