XML 187 R172.htm IDEA: XBRL DOCUMENT
v3.23.1

EQUITY AND REMUNERATION TO SHAREHOLDERS (Details 7) - BRL (R$) R$ / shares in Units, R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Calculation of minimum dividends required by the by-laws for the preferred shares |  |  |
Nominal value of the preferred shares | R$ 7,328 | R$ 5,637 | R$ 5,055
Preferred shares | R$ 7,328 | R$ 5,637 | R$ 5,055
Percentage applied to the nominal value of the preferred shares | 10.00% | 10.00% | 10.00%
Amount of the dividends by the first payment criterion | R$ 733 | R$ 564 | R$ 506
Equity | R$ 21,777 | R$ 19,457 | R$ 17,473
Preferred shares as a percentage of Equity (net of shares held in Treasury) | 66.56% | 66.56% | 66.56%
Portion of Equity represented by the preferred shares | R$ 14,495 | R$ 12,950 | R$ 11,630
Percentage applied to the portion of Equity | 3.00% | 3.00% | 3.00%
Amount of the dividends by the second payment criterion | R$ 435 | R$ 389 | R$ 349
Minimum dividends required by the by-laws for the preferred shares | 733 | 564 | 506
Mandatory dividend |  |  |
Net income for the year | R$ 4,092 | R$ 3,751 | R$ 2,864
Mandatory dividend percentage | 50.00% | 50.00% | 50.00%
Mandatory dividends - 50% of Net income | R$ 2,046 | R$ 1,876 | R$ 1,432
Unrealized earnings reserve | (835) | (835) | (835)
Reversal of the unrealized earnings reserve of 2019 | 835 | 835 | 835
Withholding income tax on Interest on equity | 186 | 91 | 50
Minimum Dividend under the by-laws including income tax on interest on equity | 2,232 | 1,967 | 1,482
Dividends recorded, as specified in the by-laws |  |  |
Interest on Equity | 1,983 | 956 | 553
Ordinary dividends | 249 | 1,011 | 929
Total dividends for the preferred shares | 1,486 | 1,309 | 986
Total dividends for the common shares | R$ 747 | R$ 658 | R$ 496
Unit value of dividends - R$ |  |  |
Minimum dividends required by the by-laws for the preferred shares | R$ 0.50 | R$ 0.50 | R$ 0.50
Mandatory dividends (including withholding income tax on Interest on Equity) | 1.01 | 1.16 | 0.99
Dividends proposed: Common (ON) shares | 1.01 | 1.16 | 0.99
Dividends proposed: Preferred (PN) shares | R$ 1.01 | R$ 1.16 | R$ 0.99

X
- References No definition available. + Details
Name: | cig_CalculationOfMinimumDividendsRequiredByBylawsForPreferredSharesAbstract
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Dividends paid first installment. + References No definition available. + Details
Name: | cig_DividendsPaidFirstInstallment
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Dividends paid second installment. + References No definition available. + Details
Name: | cig_DividendsPaidSecondInstallment
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_DividendsRecordedAsSpecifiedInBylawsAbstract
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cig_InterestOnEquity
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_MandatoryDividendAbstract
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mandatory dividend payout as percentage of net profit. + References No definition available. + Details
Name: | cig_MandatoryDividendPayoutAsPercentageOfNetProfit
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_MandatoryDividendPercentage
Namespace Prefix: | cig_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum dividend per share under by laws. + References No definition available. + Details
Name: | cig_MinimumDividendPerShareUnderByLaws
Namespace Prefix: | cig_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum dividend per share under by laws including income tax on interest on equity. + References No definition available. + Details
Name: | cig_MinimumDividendPerShareUnderByLawsIncludingIncomeTaxOnInterestOnEquity
Namespace Prefix: | cig_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum dividend under by laws. + References No definition available. + Details
Name: | cig_MinimumDividendUnderByLaws
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Minimum dividend under by laws including income tax on interest on equity. + References No definition available. + Details
Name: | cig_MinimumDividendUnderByLawsIncludingIncomeTaxOnInterestOnEquity
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | cig_NetIncomeForYear
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Nominal value preference shares held. + References No definition available. + Details
Name: | cig_NominalValuePreferenceSharesHeld
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_OrdinaryDividends
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_PercentageAppliedToNominalValueOfPreferredShares
Namespace Prefix: | cig_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cig_PercentageAppliedToPortionOfEquity
Namespace Prefix: | cig_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cig_PortionOfEquityRepresentedByPreferredShares
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_PreferredEquity
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Preferred shares. + References No definition available. + Details
Name: | cig_PreferredShares
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_PreferredSharesAsPercentageOfEquityNetOfSharesHeldInTreasury
Namespace Prefix: | cig_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proposed dividends per share. + References No definition available. + Details
Name: | cig_ProposedDividendsPerShare
Namespace Prefix: | cig_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proposed dividends per share. + References No definition available. + Details
Name: | cig_ProposedPreferredPnShares
Namespace Prefix: | cig_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of reversal of unrealized profit reserve created in 2019. + References No definition available. + Details
Name: | cig_ReversalOfUnrealizedProfitReserveCreatedIn2019
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_TotalDividendsForCommonShares
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_TotalDividendsForPreferredShares
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | cig_UnitValueOfDividendsAbstract
Namespace Prefix: | cig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount refers to unrealized profit reserve. + References No definition available. + Details
Name: | cig_UnrealizedProfitReserve
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Withholding income tax of interest on equity. + References No definition available. + Details
Name: | cig_WithholdingIncomeTaxOfInterestOnEquity
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant