Aggregate value of acquisition.

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- Definition

Current Subsidy Receivable

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No definition available.

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- Definition

Debentures issued.

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Debentures Shares

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No definition available.

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- Definition

Future earnings reserve share capital.

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No definition available.

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- Definition

Interest On Equity

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No definition available.

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- Definition

The nominal amount per unit of debt instrument issued by the reporting entity.

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No definition available.

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The number of series of debt instrument issued by the reporting entity.

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No definition available.

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- Definition

Represents the percentage of average adjustments of consumer rates.

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No definition available.

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Permitted annual revenue.

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No definition available.

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Represent information about the profit reserve exceed share capital.

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No definition available.

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- Definition

Retained earnings reserve.

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No definition available.

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- Definition

The capacity of transmission facility.

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No definition available.

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- Definition

The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2024-01-01
-Paragraph 144
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The amount of other comprehensive income, net of tax, resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions]

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- Definition

A component of equity representing the capital reserves.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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No definition available.

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- Definition

The nominal value of capital issued.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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-Number 1
-IssueDate 2024-01-01
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2024-03-27

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- Definition

The non-current portion of non-current notes and debentures issued. [Refer: Notes and debentures issued]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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- Definition

The number of shares issued by the entity.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
-IssueDate 2024-01-01
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard
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- Definition

The nominal value per share.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 1
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph a
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- Definition

The amount of expense (income) resulting from past service cost. Past service cost is the change in the present value of the defined benefit obligation for employee service in prior periods, resulting from a plan amendment (the introduction or withdrawal of, or changes to, a defined benefit plan) or a curtailment (a significant reduction by the entity in the number of employees covered by a plan). [Refer: Post-employment benefit expense in profit or loss, defined benefit plans; Defined benefit plans [domain]] [Contrast: Increase (decrease) in net defined benefit liability (asset) resulting from past service cost]

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- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]]

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Subsequent Events - Additional Information (Details)								12 Months Ended
Subsequent Events - Additional Information (Details)	Apr. 11, 2025 BRL (R$) Number shares	Apr. 09, 2025 BRL (R$) Number shares	Mar. 31, 2025 BRL (R$)	Mar. 18, 2025 BRL (R$) shares	Feb. 26, 2025 BRL (R$) kV	Feb. 21, 2025 BRL (R$) shares	Dec. 27, 2024 BRL (R$) shares	Dec. 31, 2024 BRL (R$) R$ / shares shares	Dec. 31, 2023 BRL (R$) shares	Mar. 20, 2025 BRL (R$)	Jan. 24, 2025	Sep. 27, 2024 BRL (R$)	Apr. 29, 2024 shares	Mar. 27, 2024	Feb. 29, 2024 BRL (R$)	Dec. 31, 2022 BRL (R$)
Disclosure of non-adjusting events after reporting period [line items]
Current subsidy receivable								R$ 208,000,000	R$ 196,000,000						R$ 101,000,000
Share capital								14,309,000,000	11,007,000,000
Profit reserve exceed share capital									986,000,000
Future earnings reserve share capital									11,993,000,000
Capital reserves								393,000,000	R$ 2,250,000,000							R$ 2,250,000,000
Retained earnings reserve								R$ 1,445,000,000
Issuance of shares \| shares								2,861,781,895	2,201,370,688				660,411,207
Par value \| R$ / shares								R$ 5
Interest on equity								R$ 1,849,000,000	R$ 2,592,000,000							R$ 1,983,000,000
Debentures shares \| shares							200,000
Debenture							R$ 200,000,000
Permitted Annual Revenue								R$ 17,000,000
Principal amount							R$ 200,000,000					R$ 2,436,000,000
Urban Market [Member] \| Minimum [Member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of average adjustments of consumer rates											5.34%
Urban Market [Member] \| Maximum [Member]
Disclosure of non-adjusting events after reporting period [line items]
Percentage of average adjustments of consumer rates											6.17%
Ordinary shares [member]
Disclosure of non-adjusting events after reporting period [line items]
Issuance of shares \| shares								220,754,287
Par value \| R$ / shares								R$ 5
Preference shares [member]
Disclosure of non-adjusting events after reporting period [line items]
Issuance of shares \| shares								1,905,179,984	1,465,523,064				439,656,920
Events After Reporting Period [Member]
Disclosure of non-adjusting events after reporting period [line items]
Actuarial assumption of discount rates			12.32%
Events After Reporting Period [Member] \| Unsecured Debentures Tenth Issue Member
Disclosure of non-adjusting events after reporting period [line items]
Debentures shares \| shares				625,000
Debenture				R$ 625,000,000
Events After Reporting Period [Member] \| Health plan [member]
Disclosure of non-adjusting events after reporting period [line items]
Past service cost			R$ 27,000,000
Actuarial gain			59,000,000
Events After Reporting Period [Member] \| Dental plan [member]
Disclosure of non-adjusting events after reporting period [line items]
Past service cost			1,000,000
Actuarial gain			R$ 1,000,000
Major business combination [member]
Disclosure of non-adjusting events after reporting period [line items]
Transmission facility capacity \| kV					230
Declaration Of Interest On Equity Member
Disclosure of non-adjusting events after reporting period [line items]
Interest on equity										R$ 541,006
Cemiggt [Member] \| Events After Reporting Period [Member] \| Unsecured Debentures Tenth Issue Member
Disclosure of non-adjusting events after reporting period [line items]
Debentures shares \| shares				625,000		500,000
Principal amount				R$ 625,000,000		R$ 500,000,000
Cemiggt [Member] \| Major business combination [member]
Disclosure of non-adjusting events after reporting period [line items]
Aggregate value of acquisition					R$ 30,000,000
Permitted Annual Revenue					R$ 5,700,000
Alianca Energia SA [Member]
Disclosure of non-adjusting events after reporting period [line items]
Equity interest														45.00%
Cemig D [Member] \| Events After Reporting Period [Member] \| Unsecured Debentures Twelth Issue Series 2 Member
Disclosure of non-adjusting events after reporting period [line items]
Principal amount				R$ 2,500,000,000		R$ 2,000,000,000
Cemig D [Member] \| Events After Reporting Period [Member] \| Unsecured Debentures 13th Issue [Member]
Disclosure of non-adjusting events after reporting period [line items]
Debentures issued \| shares		1,895,000
Cemig D [Member] \| Major business combination [member] \| Unsecured Debentures 13th Issue [Member]
Disclosure of non-adjusting events after reporting period [line items]
Debentures issued \| shares	1,895,000
Principal amount	R$ 1,895,000,000	R$ 2,000,000,000
Nominal amount per unit of debt instrument		R$ 1,000
Number of series of debt instrument issued \| Number	2	2