XML 158 R137.htm IDEA: XBRL DOCUMENT
v3.25.1

Leasing - Schedule of Embedded Leasing Consideration (Details) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 BRL (R$)
IfrsStatementLineItems [Line Items] |
Potential PIS Pasep And Cofins Tax Rate | 9.25%
Nominal [member] |
IfrsStatementLineItems [Line Items] |
Consideration for the leasing | R$ 659
Potential PIS/Pasep and Cofins (9.25%) | 36
Adjusted To Present Value [member] |
IfrsStatementLineItems [Line Items] |
Consideration for the leasing | 429
Potential PIS/Pasep and Cofins (9.25%) | R$ 21

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- Definition Represent information about the cash outflow for potential p i s. + References No definition available. + Details
Name: | cig_CashOutflowForPotentialPIS
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Ifrs Statement Line Items + References No definition available. + Details
Name: | cig_IfrsStatementLineItems
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of Potential PIS/Pasep and Cofins tax rate. + References No definition available. + Details
Name: | cig_PotentialPISPasepAndCofinsTaxRate
Namespace Prefix: | cig_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The cash outflow for leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_g&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CashOutflowForLeases
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | cig_CashFlowLocationAxis=cig_NominalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | cig_CashFlowLocationAxis=cig_AdjustedToPresentValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |