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33 Financial Results (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
FinancialResultLineItems [Line Items] |  |  |
Financial income | R$ 750,241 | R$ 813,915 | R$ 699,310
Financial expenses | 1,238,727 | 1,251,965 | 1,447,750
Financial result, net | (488,486) | (438,050) | (748,440)
Arrears Charges On Bills [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 225,956 | 226,050 | 191,554
Interest And Monetary Variation Of CRC Transfer Expense [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 192,724 | 214,627 | 141,923
Return On Financial Investments [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 126,510 | 98,841 | 114,523
Recognition Of Tax Credit [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 38,434 | 55,096 |
Remuneration Of Net Sectorial Assets And Liabilities Expense [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 47,378 | 43,966 | 20,493
Monetary Variation Over The Ltaipu Power Purchase [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 26,332 | 24,658 | 17,777
Monetary Variation And Adjust To Present Value Of Accounts Payable Related To The Concession [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 1,462 | 1,047 | 10,813
Other Financial Income [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial income | 91,445 | 149,630 | 202,227
Monetary And Exchange Variation And Debt Charges [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 906,952 | 871,397 | 993,970
Monetary Variation And Adjust To Present Value Of Accounts Payable Related To The Concession Expense [Member]r |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 100,455 | 94,319 | 65,418
Monetary Variation Over The Itaipu Power Purchase Expense [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 29,547 | 50,203 | 12,264
Interest And Monetary Variation Of CRC Transfer [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 8,495 | 25,830 | 51,211
Interest on R&D and EEP [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 24,570 | 25,407 | 34,345
Remuneration Of Net Sectorial Assets And Liabilities [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 5,753 | 23,747 | 29,622
PIS/Pasep/Cofins Taxes On Interest On Capital [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | 71,549 | 13,636 | 45,196
Other Financial Expenses [Member] |  |  |
FinancialResultLineItems [Line Items] |  |  |
Financial expenses | R$ 91,406 | R$ 147,426 | R$ 215,724

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