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Investments - Schedule of Conclusion of the Transaction Cost Recognized the Following Accounting Effects (Details) - BRL (R$) R$ in Millions | 1 Months Ended |  |
--- | --- | --- | ---
Nov. 30, 2023 | Oct. 31, 2023 | Sep. 30, 2023 | Apr. 30, 2023
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Value of asset held for sale on Sep. 30, 2023 |  |  |  |  | R$ (350)
Baguari Energia [Member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total sale price |  |  | R$ 421 |  |
Value of asset held for sale on Sep. 30, 2023 |  |  |  | R$ (160) | (160)
Corporate capital gain (1) (a) | [1] |  | 261 |  |
Tax capital gain net of selling expenses | [2] |  | 248 |  |
Corporate income tax and the social contribution on net income IRPJ and CSLL (b) |  |  | (84) |  |
Tax capital gain net of taxes | [1] |  | 164 |  |
Net impact on the Income Statement (a + b) |  |  | R$ 177 |  |
Retiro Baixo [Member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Total sale price |  | R$ 218 |  |  |
Value of asset held for sale on Sep. 30, 2023 |  | (191) |  |  | R$ (190)
Corporate capital gain (1) (a) |  | 27 |  |  |
Tax capital gain net of selling expenses |  | 6 |  |  |
Corporate income tax and the social contribution on net income IRPJ and CSLL (b) |  | (2) |  |  |
Tax capital gain net of taxes |  | 4 |  |  |
Net impact on the Income Statement (a + b) |  | R$ 25 |  |  |
Cemig Geracaoe Transmissao S A [Member] | Baguari Energia [Member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Stake held by Cemig GT |  |  | 69.39% |  |
Cemig Geracaoe Transmissao S A [Member] | Retiro Baixo [Member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Stake held by Cemig GT |  | 49.90% |  |  |
[1] | The effects of the disposal will be reported in the net profit for the operational segment of Equity holdings, in the note 5.
[2] | Sales expenses totaled R$1 and its refers to accounting, tax and legal due diligence services, and legal advice.

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