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Consumers Energy Company Consolidated Balance Sheets (Parenthetical) - USD ($)
shares in Millions, $ in Millions
Dec. 31, 2025
Dec. 31, 2024
Accounts receivable and accrued revenue, allowance $ 27 $ 23
Common stock authorized (in shares) 350.0 350.0
Common stock outstanding (in shares) 306.4 298.8
Preferred stock, par value (in dollars per share) $ 0.01  
Preferred stock authorized (in shares) 10.0  
Consumers Energy Company    
Accounts receivable and accrued revenue, allowance $ 27 $ 23
Common stock authorized (in shares) 125.0 125.0
Common stock outstanding (in shares) 84.1 84.1
Preferred stock, par value (in dollars per share) $ 4.50 $ 4.50
Preferred stock authorized (in shares) 7.5 7.5
Preferred stock outstanding (in shares) 0.4 0.4