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Financial Instruments and Risks Management - Outstanding of assets and liabilities derivatives positions (Details) R$ in Thousands, $ in Thousands | Dec. 31, 2019 USD ($) | Dec. 31, 2019 BRL (R$) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 BRL (R$)
--- | --- | --- | --- | ---
Financial Instruments and Risks |  |  |  |
Fair value |  | R$ (1,818,941) |  | R$ (1,142,766)
Debt hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | (2,154,474) |  | (1,023,848)
Operational Hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | 67,078 |  | (117,778)
Operational Hedge | Zero-cost collar (R$ x US$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | $ 3,425,000 |  | $ 3,040,000 |
Fair value |  | 67,078 |  | (134,814)
Operational Hedge | NDF (R$ x US$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ |  |  | 150,000 |
Fair value |  |  |  | 17,036
Commodity hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | 268,455 |  | (1,140)
Commodity hedge | Swap US-CPI standing wood (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 679,485 |  |  |
Fair value |  | 268,547 |  |
Commodity hedge | Swap Bunker (oil) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 365 |  | 5,344 |
Fair value |  | (92) |  | (1,140)
Assets | Debt hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | 25,887,797 |  | 119,178
Assets | Debt hedge | Swap CDI x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount |  | 11,498,565 |  | 8,722,620
Fair value |  | 11,673,117 |  | 119,178
Assets | Debt hedge | Pre-fixed Swap to U.S.$ (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 1,317,226 |  |  |
Fair value |  | 1,478,336 |  |
Assets | Debt hedge | Swap LIBOR x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 2,750,000 |  | 2,757,143 |
Fair value |  | 11,063,970 |  |
Assets | Debt hedge | Swap IPCA x CDI (notional in Reais) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 933,842 |  |  |
Fair value |  | 1,093,067 |  |
Assets | Debt hedge | Swap IPCA x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 499,441 |  |  |
Fair value |  | 579,307 |  |
Liabilities | Swap IPCA x CDI (notional in Reais) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 843,845 |  |  |
Fair value |  | (859,812) |  |
Liabilities | Debt hedge |  |  |  |
Financial Instruments and Risks |  |  |  |
Fair value |  | (28,042,271) |  | (1,143,026)
Liabilities | Debt hedge | Swap CDI x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 3,115,614 |  | 2,402,110 |
Fair value |  | (13,613,469) |  | (972,319)
Liabilities | Debt hedge | Swap LIBOR x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 350,000 |  | $ 2,757,143 |
Fair value |  | (1,511,347) |  | R$ (170,707)
Liabilities | Debt hedge | Swap LIBOR x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | 2,750,000 |  |  |
Fair value |  | (11,508,880) |  |
Liabilities | Debt hedge | Swap IPCA x Fixed (U.S.$) |  |  |  |
Financial Instruments and Risks |  |  |  |
Notional amount | $ | $ 121,003 |  |  |
Fair value |  | R$ (548,763) |  |

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- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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