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FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT - Derivatives outstanding by type of contract (Details) R$ in Thousands, $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2020 BRL (R$) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 BRL (R$)
--- | --- | --- | --- | ---
Financial Instruments and Risks |  |  |  |
Fair value |  | R$ (6,775,980) |  | R$ (1,818,941)
Operational Hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | (772,509) |  | 67,078
Operational Hedge | Zero Cost Collar |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | $ 3,212,250 |  | $ 3,425,000 |
Fair value |  | (780,457) |  | 67,078
Operational Hedge | NDF (R$ x US$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 80,000 |  |  |
Fair value |  | 7,948 |  |
Debt Hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | (6,374,130) |  | (2,154,474)
Debt Hedge | Interest rate hedge | Swap LIBOR x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 3,683,333 |  | 2,750,000 |
Fair value |  | (1,059,192) |  | (444,910)
Debt Hedge | Interest rate hedge | Swap IPCA x CDI |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 843,845 |  | 843,845 |
Fair value |  | 285,533 |  | 233,255
Debt Hedge | Interest rate hedge | Swap IPCA x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 121,003 |  | 121,003 |
Fair value |  | (114,834) |  | 30,544
Debt Hedge | Interest rate hedge | Swap CDI x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 2,267,057 |  | 3,115,614 |
Fair value |  | (4,977,309) |  | (1,940,352)
Debt Hedge | Interest rate hedge | Pre-fixed Swap to U.S.$ (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 350,000 |  | 350,000 |
Fair value |  | (508,328) |  | (33,011)
Commodity Hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | 370,659 |  | 268,455
Commodity Hedge | Swap US-CPI (standing wood) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | 646,068 |  | 679,485 |
Fair value |  | 354,900 |  | 268,547
Commodity Hedge | Swap VLSFO/Brent |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional Amount | $ | $ 37,757 |  | $ 365 |
Fair value |  | R$ 15,759 |  | R$ (92)

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