XML 225 R204.htm IDEA: XBRL DOCUMENT v3.25.1

Related Party Transactions (Details 3) - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction
Remuneration	R$ 34	R$ 29	R$ 29
Income sharing	8	7	6
Pension plans	2	2	2
Total	R$ 44	R$ 38	R$ 37

X

- Definition

Key management personnel assistance benefits.

+ References

No definition available.

+ Details

Name:	cig_KeyManagementPersonnelAssistanceBenefits
Namespace Prefix:	cig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Key management personnel compensation salaries and other benefits.

+ References

No definition available.

+ Details

Name:	cig_KeyManagementPersonnelCompensationSalariesAndOtherBenefits
Namespace Prefix:	cig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Key management personnel profit shares (reversals).

+ References

No definition available.

+ Details

Name:	cig_KeyManagementPersonnelProfitSharesReversals
Namespace Prefix:	cig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2024-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_17&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ifrs-full_RelatedPartyTransactionsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration