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FINANCIAL INSTRUMENTS AND RISKS MANAGEMENT - Fair value settled amounts (Details) - BRL (R$) R$ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Financial Instruments and Risks |  |
Cash (paid) received | R$ (1,434,288) | R$ (4,465,640)
Operational Hedge |  |
Financial Instruments and Risks |  |
Cash (paid) received | (1,161,313) | (2,328,973)
Operational Hedge | Zero cost collar (R$ x U.S.$) |  |
Financial Instruments and Risks |  |
Cash (paid) received | (1,161,276) | (2,268,158)
Operational Hedge | NDF (R$ x US$) |  |
Financial Instruments and Risks |  |
Cash (paid) received | (37) | (60,815)
Commodity Hedge |  |
Financial Instruments and Risks |  |
Cash (paid) received | 53,840 | (85,468)
Commodity Hedge | Swap Bunker (oil) |  |
Financial Instruments and Risks |  |
Cash (paid) received | 53,840 | (85,468)
Debt Hedge |  |
Financial Instruments and Risks |  |
Cash (paid) received | (326,815) | (2,051,199)
Debt Hedge | Swap CDI x Fixed (U.S.$) |  |
Financial Instruments and Risks |  |
Cash (paid) received | (184,748) | (1,888,906)
Debt Hedge | Swap IPCA x CDI |  |
Financial Instruments and Risks |  |
Cash (paid) received | 20,148 | 10,601
Debt Hedge | Swap IPCA x Fixed (U.S.$) |  |
Financial Instruments and Risks |  |
Cash (paid) received |  | 10,054
Debt Hedge | Swap Pre-Fixed to U.S.$ (U.S.$) |  |
Financial Instruments and Risks |  |
Cash (paid) received | 49,562 | 59,351
Debt Hedge | Swap LIBOR x Fixed (U.S.$) |  |
Financial Instruments and Risks |  |
Cash (paid) received | R$ (211,777) | R$ (242,299)

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