XML 229 R211.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Related Party Transactions (Details 2) - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Related party transactions [abstract]
Opening balances	R$ 146	R$ 335	R$ 188
Dividends proposed by investees	496	519	655
Withholding income tax on Interest on equity			(9)
Amounts received	(592)	(708)	(499)
Ending balances	R$ 50	R$ 146	R$ 335

X

- Definition

Dividend receivable.

+ References

No definition available.

+ Details

Name:	cig_DividendReceivable
Namespace Prefix:	cig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Investees dividends proposal.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of withholding income tax on Interest on equity.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of dividends received.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2023-01-01
-Paragraph B12
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_B12_a&doctype=Appendix&subtype=B
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DividendsReceived
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