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FINANCIAL INSTRUMENTS - Sensitivity analysis (Details) R$ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 BRL (R$) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 BRL (R$)
Interest Rate Swap |  |  |
Sensitivity analysis |  |  |
Impact on income statement based on change in assumption | R$ 55,964 |  | R$ 85,147
Foreign currency risk |  |  |
Sensitivity analysis |  |  |
Percentage of change | 5.00% | 5.00% | 5.00%
Impact on income statement based on change in assumption | R$ 19,036 |  | R$ 15,057
Impact on income statement based on change in assumption, after effects of changes in net investment hedge | R$ 19,036 |  | R$ 15,047
Foreign currency risk | Interest Rate Swap |  |  |
Sensitivity analysis |  |  |
Interest rate change (as a percent) | 5.00% | 5.00% | 5.00%
Foreign currency risk | Non-Deliverable Forwards |  |  |
Sensitivity analysis |  |  |
Percentage of change | 5.00% | 5.00% | 5.00%
Impact on income statement based on change in assumption | R$ 0 |  | R$ 3,703
Interest rate risk |  |  |
Sensitivity analysis |  |  |
Interest rate change (as a percent) | 0.10% | 0.10% | 0.10%
Impact on income statement based on change in assumption | R$ 55,964 |  | R$ 85,147
Interest rate risk | Interest Rate Swap |  |  |
Sensitivity analysis |  |  |
Impact on income statement based on change in assumption |  |  | R$ 3,703
Products sold price risk |  |  |
Sensitivity analysis |  |  |
Percentage of change | 1.00% | 1.00% | 1.00%
Impact on income statement based on change in assumption | R$ 783,451 |  | R$ 438,147
Products sold price risk | Cross currency swap |  |  |
Sensitivity analysis |  |  |
Impact on income statement based on change in assumption |  |  | R$ 438,147
Raw materials and commodity price risk |  |  |
Sensitivity analysis |  |  |
Percentage of change | 1.00% | 1.00% | 1.00%
Impact on income statement based on change in assumption | R$ 437,210 |  | R$ 269,454
Raw materials and commodity price risk | Interest rate swaps and foreign currency swaps |  |  |
Sensitivity analysis |  |  |
Impact on income statement based on change in assumption |  |  | 269,454
Commodity contracts |  |  |
Sensitivity analysis |  |  |
Interest rate change (as a percent) | 5.00% | 5.00% |
Impact on income statement based on change in assumption | $ |  | $ 4,892 |
Impact on income statement based on change in assumption, after effects of changes in net investment hedge |  |  | R$ 0
Commodity contracts | Non-Deliverable Forwards |  |  |
Sensitivity analysis |  |  |
Impact on income statement based on change in assumption | R$ 4,892 |  |

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