XML 166 R207.htm IDEA: XBRL DOCUMENT v3.20.1

32. RELATED PARTY TRANSACTIONS (Details 4) - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of transactions between related parties [abstract]
Remuneration	R$ 25	R$ 34	R$ 32
Profit sharing (reversal)	6	4	1
Assistance benefits	1	3	2
Total	R$ 32	R$ 41	R$ 35

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

- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
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 2019-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_17&doctype=Standard
-URIDate 2019-03-27

+ Details

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