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30. OPERATING COSTS AND EXPENSES (Details Narrative) R$ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2019 BRL (R$) Number | Mar. 31, 2018 BRL (R$) Number | Mar. 31, 2019 BRL (R$) Employee | Dec. 31, 2019 BRL (R$) Employee | Dec. 31, 2018 BRL (R$) Employee
Disclosure Of Operating Costs And Expenses [line items] |  |  |  |  |
Period of eligibility for the severance program |  | 25 years |  |  | 25 years
Penalty in percentage |  |  |  |  | 40.00%
Programmed voluntary retirement plan expense | R$ 21 | R$ 65 |  |  | R$ 214
Number of employees completing severance | 155 | 458 |  |  | 1,189
Right of use |  |  |  | R$ 32 |
Action provisioned at the cost |  |  |  | 98 |
Impairment of intangible assets |  |  |  | 22 |
Cemig [Member] |  |  |  |  |
Disclosure Of Operating Costs And Expenses [line items] |  |  |  |  |
Right of use |  |  |  | 32 |
Pasep and Cofins Credits [Member] |  |  |  |  |
Disclosure Of Operating Costs And Expenses [line items] |  |  |  |  |
Right of use |  |  |  | 5 |
PDVP 2019 [member] |  |  |  |  |
Disclosure Of Operating Costs And Expenses [line items] |  |  |  |  |
Programmed voluntary retirement plan expense |  |  | R$ 87 | R$ 65 | R$ 26
Number of employees completing severance | Employee |  |  | 613 | 458 | 151

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