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CONCESSIONS AND AUTHORIZATIONS (Details Narrative) - BRL (R$) R$ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 19, 2019 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |
Discount of future payments |  |  | 12.50%
Concession grant fee | R$ 852 |  |
Two Thousand And Nineteen [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Percentage of Selic rate |  | 80.00% |
Two Thousand Twenty [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Percentage of Selic rate |  | 111.00% |
Cemig Distribution [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Concession expired |  | December 2045 |

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