XML 223 R202.htm IDEA: XBRL DOCUMENT
v3.25.1

Related Party Transactions (Details 1) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Related Party Transaction |  |
Taesa | R$ 111 | R$ 50
Total | R$ 111 | R$ 50

X
- Definition Dvidends Receivable Taesa + References No definition available. + Details
Name: | cig_DvidendsReceivableTaesa
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Dvidends Receivable Total + References No definition available. + Details
Name: | cig_DvidendsReceivableTotal
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_RelatedPartyTransactionsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration