XML 156 R141.htm IDEA: XBRL DOCUMENT
v3.23.1

LOANS AND DEBENTURES (Details 4) R$ in Millions | Dec. 31, 2022 BRL (R$)
--- | ---
IfrsStatementLineItems [Line Items] |
Borrowings | R$ 10,580
Promissory Notes and Sureties [member] |
IfrsStatementLineItems [Line Items] |
Borrowings | 4,871
Guarantee and Receivables [member] |
IfrsStatementLineItems [Line Items] |
Borrowings | 2,663
Receivables [member] |
IfrsStatementLineItems [Line Items] |
Borrowings | 1,998
Shares [member] |
IfrsStatementLineItems [Line Items] |
Borrowings | 2
Unsecured [member] |
IfrsStatementLineItems [Line Items] |
Borrowings | R$ 1,046

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Namespace Prefix: | cig_
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Balance Type: | credit
Period Type: | instant

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Balance Type: | na
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- Details
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Namespace Prefix: |
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Data Type: | na
Balance Type: |
Period Type: |

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Name: | ifrs-full_TypesOfFinancialLiabilitiesAxis=cig_ReceivablesMember
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Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |