XML 205 R191.htm IDEA: XBRL DOCUMENT v3.23.2

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Details 1) - Put option - SAAG [member] - BRL (R$) R$ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IfrsStatementLineItems [Line Items]
Balance	R$ 636	R$ 536	R$ 483
Adjustment to fair value	36	100	53
Balance	R$ 672	R$ 636	R$ 536

X

- Definition

Adjustment to fair value of options.

+ References

No definition available.

+ Details

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Namespace Prefix:	cig_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	cig_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

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Period Type:	instant

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- Details

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Namespace Prefix:
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