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12. BORROWINGS, FINANCING AND DEBENTURES (Details 2) - BRL (R$) R$ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | R$ 23,173,635 | R$ 22,983,942
Bank loans |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 13,484,023 |
Capital markets |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 8,882,827 |
Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 894,094 |
2020 |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 6,753,338 |
2020 | Bank loans |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,187,269 |
2020 | Capital markets |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,499,177 |
2020 | Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 66,892 |
2021 |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,439,268 |
2021 | Bank loans |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,263,810 |
2021 | Capital markets |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 116,003 |
2021 | Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 59,455 |
2022 |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,182,553 |
2022 | Bank loans |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,087,732 |
2022 | Capital markets |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 36,667 |
2022 | Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 58,154 |
2023 |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 4,082,376 |
2023 | Bank loans |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 2,669,211 |
2023 | Capital markets |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 1,356,180 |
2023 | Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 56,985 |
2024 |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 1,343,735 |
2024 | Bank loans |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 1,276,001 |
2024 | Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 67,734 |
After 2024 |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 584,874 |
After 2024 | Development agencies |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 584,874 |
Perpetual bonds |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | 3,874,800 |
Perpetual bonds | Capital markets |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturities of borrowings and financing | R$ 3,874,800 |

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