Represents the average debt maturity.

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- Definition

Ifrs Statement Line Items

+ References

No definition available.

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- Definition

Represents the number of reportable segments.

+ References

No definition available.

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- Definition

Total Considerations

+ References

No definition available.

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- Definition

The increase (decrease) in working capital.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard
-URIDate 2024-03-27

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

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- Definition

The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Total for all subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-URIDate 2024-03-27

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- Definition

The cash outflow for repayments of bonds, notes and debentures.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 17
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17&doctype=Standard
-URIDate 2024-03-27

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Operating Context - Additional Information (Details) R$ in Millions	12 Months Ended
	Dec. 31, 2024 BRL (R$) Number	Dec. 31, 2023 BRL (R$)	Dec. 31, 2022 BRL (R$)	Dec. 27, 2024 BRL (R$)	Sep. 27, 2024 BRL (R$)
IfrsStatementLineItems [Line Items]
Negative consolidated working capital	R$ (1,914)	R$ (1,224)
Principal amount				R$ 200	R$ 2,436
Percentage of share	100.00%
Repayments of bonds, notes and debentures	R$ 2,975	R$ 2,679	R$ 2,613
Average Debt Maturity	4 years 9 months 18 days	2 years 9 months 18 days
Number Of Reportable Segments \| Number	6
Cemig GT [Member]
IfrsStatementLineItems [Line Items]
Repayments of bonds, notes and debentures	R$ 3,931
Cemig GT [Member] \| Alianca Energia SA [Member]
IfrsStatementLineItems [Line Items]
Percentage of share	45.00%
Total Considerations	R$ 2,737
Debentures Tenth and Elventh Issue [Member] \| Cemig D [Member]
IfrsStatementLineItems [Line Items]
Principal amount	R$ 4,500