XML 160 R145.htm IDEA: XBRL DOCUMENT
v3.23.1

LOANS AND DEBENTURES (Details 8) - BRL (R$) R$ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 28, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Loans And Debentures |  |  |  |  |
Costs of loans and debentures |  |  | R$ 975 | R$ 1,162 | R$ 1,211
Financing costs on intangible assets and contract assets | [1] |  | (47) | (15) | (33)
Net effect in income or loss |  |  | R$ 928 | R$ 1,147 | R$ 1,178
Average rate of capitalization rate |  | 8.71% | 11.36% | 9.44% |
[1] | The average capitalization rate p.a. on December 31, 2022 was 11.36% (9.44% on December 31, 2021).

X
- Definition Costs of loans and financings. + References No definition available. + Details
Name: | cig_CostsOfLoansAndFinancings
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The amount of financing costs on intangible assets and contract assets. + References No definition available. + Details
Name: | cig_FinancingCostsOnIntangibleAssetsAndContractAssets
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Loans and financings costs, net. + References No definition available. + Details
Name: | cig_LoansAndFinancingsCostsNet
Namespace Prefix: | cig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The weighted average of interest and other costs that an entity incurs in connection with the borrowing of funds applicable to the borrowings of the entity that are outstanding during the period, other than borrowings made specifically for the purpose of obtaining a qualifying asset. [Refer: Weighted average [member]; Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 23 -IssueDate 2022-03-24 -Paragraph 26 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=23&code=ifrs-tx-2022-en-r&anchor=para_26_b&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
Namespace Prefix: | ifrs-full_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration