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FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT - Liquidity Risk (Details) R$ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 30, 2020 USD ($) | Mar. 30, 2020 BRL (R$) | Feb. 14, 2020 BRL (R$) | Dec. 31, 2020 BRL (R$) | Dec. 31, 2019 BRL (R$) | Dec. 31, 2018 BRL (R$) | Feb. 28, 2020 USD ($) | Feb. 14, 2020 USD ($) | Feb. 14, 2020 BRL (R$)
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Disbursements received | R$ |  |  |  | R$ 14,761,796 | R$ 18,993,837 | R$ 25,645,822 |  |  |
Liquidity risk | Export prepayment ("PPE") | Settlement of EPP, Maturity February 14, 2023 |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Principle amount | $ |  |  |  |  |  |  |  | $ 750,000,000 |
Transaction amount settled | R$ |  |  | R$ 3,240,229 |  |  |  |  |  |
Liquidity risk | Export prepayment ("PPE") | Settlement of EPP, Maturity February 14, 2023 | LIBOR |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Interest rate adjustment |  |  |  |  |  |  |  | 1.15% | 1.15%
Interest rate basis |  |  | 1.15% p.a. plus quarterly LIBOR |  |  |  |  |  |
Liquidity risk | Export prepayment ("PPE") | New EPP transaction, Maturity February 13, 2026 |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Principle amount |  |  |  |  |  |  |  | $ 850,000 | R$ 3,672,259
Liquidity risk | Export prepayment ("PPE") | New EPP transaction, Maturity February 13, 2026 | LIBOR |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Interest rate adjustment |  |  |  |  |  |  |  | 1.15% | 1.15%
Interest rate basis |  |  | 1.15% p.a. plus quarterly LIBOR |  |  |  |  |  |
Liquidity risk | Make-whole Senior Notes ("Notes 2021") | LIBOR |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Principle amount | $ |  |  |  |  |  |  | $ 189,630,000 |  |
Interest rate |  |  |  |  |  |  | 5.875% |  |
Liquidity risk | Revolving credit facility |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Disbursements received | $ 500,000,000 | R$ 2,638,221 |  |  |  |  |  |  |
Liquidity risk | Revolving credit facility | LIBOR |  |  |  |  |  |  |  |  |
FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT |  |  |  |  |  |  |  |  |
Interest rate adjustment | 1.30% | 1.30% |  |  |  |  |  |  |
Interest rate basis | 1.30% plus quarterly LIBOR | 1.30% plus quarterly LIBOR |  |  |  |  |  |  |

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