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Schedule of cemig is provider of surety or guarantee of loans, financings and debentures of related parties (Details) R$ in Millions | 12 Months Ended
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Dec. 31, 2021 BRL (R$)
IfrsStatementLineItems [Line Items] |
Financing and debenture of related party | R$ 4,898
Norte Energia [Member] |
IfrsStatementLineItems [Line Items] |
Description of relationship | Jointly controlled
Description of type | Surety
Description of objective | Financing
Financing and debenture of related party | R$ 2,543
Description of maturity | 2042
Norte Energia 1 [Member] |
IfrsStatementLineItems [Line Items] |
Description of relationship | Jointly controlled
Description of type | Counter-guarantee
Description of objective | Financing
Financing and debenture of related party | R$ 684
Description of maturity | 2042
Santo Antonio Energia S A [Member] |
IfrsStatementLineItems [Line Items] |
Description of relationship | Affiliated
Description of type | Surety
Description of objective | Debentures
Financing and debenture of related party | R$ 491
Description of maturity | 2037
Santo Antonio Energia S A 1 [Member] |
IfrsStatementLineItems [Line Items] |
Description of relationship | Affiliated
Description of type | Guarantee
Description of objective | Financing
Financing and debenture of related party | R$ 1,105
Description of maturity | 2034
Norte Energia 2 [Member] |
IfrsStatementLineItems [Line Items] |
Description of relationship | Jointly controlled
Description of type | Surety
Description of objective | Debentures
Financing and debenture of related party | R$ 75
Description of maturity | 2030

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