XML 194 R173.htm IDEA: XBRL DOCUMENT
v3.25.1

Provisions - Additional Information (Details) R$ in Millions | 12 Months Ended | 28 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 BRL (R$) | Dec. 31, 2023 BRL (R$) | Dec. 31, 2022 BRL (R$) | Dec. 31, 2006 BRL (R$) | Mar. 31, 2022 BRL (R$) | Sep. 30, 2024 BRL (R$) | Aug. 31, 2021 Number
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Tax credit | R$ 229 | R$ 148 |  |  |  |  |
Provision | 1 |  |  |  |  |  |
Amount of contingency | 469 | 368 |  |  |  |  |
Estimated probable contingent amount | R$ 6 | 24 |  |  |  |  |
Indemnity of employees, paid |  |  |  | R$ 178 |  |  |
Social security contribution amount |  |  |  | R$ 122 |  |  |
Shareholding transaction description | The federal tax authority issued a tax assessment against CEMIG as a jointly responsible party with its jointly controlled entity Parati S.A. Participações em Ativos de Energia Elétrica (Parati), relating to withholding income tax (Imposto de Renda Retido na Fonte, or IRRF) allegedly applicable to returns paid by reason of a capital gain in a shareholding transaction relating to the purchase by Parati, and sale, by Enlighted, at July 7, 2011, of 100.00% of the equity interests in Luce LLC (a company with head office in Delaware, USA), holder of 75.00% of the shares in the Luce Brasil equity investment fund (FIP Luce), which was indirect holder, through Luce Empreendimentos e Participações S.A., of 13.03% of the total and voting shares of Light S.A. (Light). |  |  |  |  |  |
Energy billing dispute, refund amount | R$ 275 | 234 |  |  |  |  |
Administrative penalty, amount | 26 |  |  |  |  |  |
Additions | 508 | 409 | R$ 583 |  |  |  |
Financial assets | 8,072 | 6,540 |  |  |  |  |
Reversals | 598 | 49 | 241 |  |  |  |
PIS/PasepTaxes and Cofins [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Number Of Infringment Notices | Number |  |  |  |  |  |  | 2
Provision for taxes other than income tax [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Additions | 45 | 147 | 332 |  |  |  |
Reversals | 576 | 2 | R$ 150 |  |  |  |
Interest on Equity [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 80 | 74 |  |  |  |  |
Deposit amount | 88 | 82 |  |  |  |  |
Labor Claims [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 1,509 | 1,795 |  |  |  |  |
Estimated probable contingent amount | 467 | 432 |  |  |  |  |
Customers Claims [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 492 | 287 |  |  |  |  |
Estimated probable contingent amount | 94 | 45 |  |  |  |  |
Other Civil Proceedings [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 698 | 653 |  |  |  |  |
Estimated probable contingent amount | 62 | 40 |  |  |  |  |
Regulatory [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 637 | 589 |  |  |  |  |
Estimated probable contingent amount | 29 | 26 |  |  |  |  |
Public Lighting Contribution (CIP) [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimate contigent liability amount | 1,672 | 1,582 |  |  |  |  |
Accounting Of Energy Sale Transactions In The Electricity Trading Chamber (CCEE) [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 681 | 594 |  |  |  |  |
Tariff Increases [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Provision | 27 | 26 |  |  |  |  |
Amount of contingency | 67 | 66 |  |  |  |  |
Environmental Claims [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 159 | 149 |  |  |  |  |
Other legal Actions [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimated probable contingent amount | 22 | 13 |  |  |  |  |
Estimate contigent liability amount | 792 | 511 |  |  |  |  |
Luz Para Todos' Program [member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimate contigent liability amount | 344 | 515 |  |  |  |  |
Contractual Imbalance [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimate contigent liability amount | 200 | 246 |  |  |  |  |
IPTU [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 190 | 186 |  |  |  |  |
Estimated probable contingent amount | 3 | 2 |  |  |  |  |
Social Security Contributions on Income Sharing Payments [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 1,889 | 1,803 |  |  |  |  |
Estimated probable contingent amount | 926 | 1,449 |  |  |  |  |
Reversals | 584 |  |  |  |  |  |
Real Estate Transmission Tax [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 51 |  |  |  |  |  |
Indemnity of Employees Future Benefit [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Provision | 148 | 142 |  |  |  |  |
Amount of contingency | 332 | 319 |  |  |  |  |
Social Security Contributions [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 159 | 148 |  |  |  |  |
Income Tax Withheld on Capital Gain in a Shareholding Transaction [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 289 | 274 |  |  |  |  |
CSLL [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Provision | 508 |  |  |  |  |  |
Amount of contingency |  | 587 |  |  |  |  |
ICMS [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 261 | 223 |  |  |  |  |
Infraction notices, amount |  |  |  |  | R$ 357 |  |
Infraction notices, principal amount |  |  |  |  | 124 |  |
Infraction notices, penalty payments |  |  |  |  | 201 |  |
Infraction notices, interest amount |  |  |  |  | R$ 32 |  |
Pasep and Cofins Taxes [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 216 | 200 |  |  |  |  |
Power Supply Outages [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 345 | 103 |  |  |  |  |
Administrative Penalty [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Amount of contingency | 156 | 132 |  |  |  |  |
Arbitration Proceedings [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount | 163 |  |  |  |  |  |
Application to Override Corporate Identity [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimate contigent liability amount | 146 | 146 |  |  |  |  |
Clearance of Residential Occupation under High Voltage Lines [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimate contigent liability amount | 223 | 130 |  |  |  |  |
Additions | 12 |  |  |  |  |  |
Volta do Rio Wind Farm [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimate contigent liability amount | 311 | 174 |  |  |  |  |
Accounts Receivable From The State Of Minas Gerais [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Contigent liability amount |  |  |  |  |  | R$ 278 |
Financial assets | 13 | R$ 13 |  |  |  |  |
Power Purchasing Agreement [Member] |  |  |  |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |  |  |  |
Estimated probable contingent amount | R$ 57 |  |  |  |  |  |

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