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LOANS AND FINANCING - Amortization Schedule (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Amortization schedules of long term loans and financing |  |
Long-term debt | R$ 14,457,315 | R$ 15,959,590
Year Two |  |
Amortization schedules of long term loans and financing |  |
Long-term debt | 873,274 | 1,679,416
Year Three |  |
Amortization schedules of long term loans and financing |  |
Long-term debt | 3,158,211 | 875,319
Year Four |  |
Amortization schedules of long term loans and financing |  |
Long-term debt | 1,730,177 | 3,261,435
Year Five |  |
Amortization schedules of long term loans and financing |  |
Long-term debt | 147,715 | 3,500,937
After year 5 |  |
Amortization schedules of long term loans and financing |  |
Long-term debt | R$ 8,547,938 |
Year Six |  |
Amortization schedules of long term loans and financing |  |
Long-term debt |  | 150,916
After Year Six |  |
Amortization schedules of long term loans and financing |  |
Long-term debt |  | R$ 6,491,567

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