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Financings and Capitalization (Schedule of Preferred Stock) (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 $ / shares shares | Dec. 31, 2022 $ / shares shares
Debt and Equity Securities, FV-NI [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ / shares | $ 0.01 |
Preferred stock authorized (in shares) | 10,000,000 |
Consumers Energy Company |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ / shares | $ 4.50 | $ 4.50
Preferred stock authorized (in shares) | 7,500,000 | 7,500,000
Preferred stock outstanding (in shares) | 400,000 | 400,000
Series C Preferred Stock Depositary Shares |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Trading symbol | CMS PRC |
Depositary share conversion ratio | 0.001 |
Preferred stock, par value (in dollars per share) | $ / shares | $ 25 | $ 25
Optional redemption price (in dollars per share) | $ / shares | $ 25 | $ 25
Preferred stock authorized (in shares) | 9,200,000 | 9,200,000
Preferred stock outstanding (in shares) | 9,200,000 | 9,200,000
Consumers Energy Company Cumulative Preferred Stock, $100 par value: $4.50 Series |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Trading symbol | CMS-PB |
Preferred Stock $4.50 Series | Consumers Energy Company |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
Preferred stock, par value (in dollars per share) | $ / shares | $ 100 | $ 100
Optional redemption price (in dollars per share) | $ / shares | $ 110 | $ 110
Preferred stock authorized (in shares) | 7,500,000 | 7,500,000
Preferred stock outstanding (in shares) | 373,148 | 373,148

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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-13 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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