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12. BORROWINGS, FINANCING AND DEBENTURES (Details 4) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about borrowings [line items] |  |  |
Raised | R$ 2,154,471 |  |
Payment of Principal | 5,019,978 |  |
Debt charges | 2,141,710 | R$ 2,634,931 | R$ 3,050,036
Prepayment |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Payment of Principal | 849,654 |  |
Debt charges | 280,923 |  |
Bonds |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Raised | 1,749,099 |  |
Payment of Principal | 1,632,464 |  |
Debt charges | 675,370 |  |
BNDES/FINAME |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Raised | 10,792 |  |
Payment of Principal | 1,948,014 |  |
Debt charges | 1,173,380 |  |
Other |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Raised | 394,580 |  |
Payment of Principal | 589,846 |  |
Debt charges | R$ 12,037 |  |

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