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12. FINANCIAL INSTRUMENTS (Details 11) - Interest rate risk [member] | Dec. 31, 2019
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CDI [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 4.40%
CDI [Member] | Scenario 1 [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 5.50%
CDI [Member] | Scenario 2 [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 6.60%
TJLP [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 5.57%
TJLP [Member] | Scenario 1 [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 6.96%
TJLP [Member] | Scenario 2 [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 8.36%
Libor [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 1.91%
Libor [Member] | Scenario 1 [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 2.39%
Libor [Member] | Scenario 2 [Member] |
Disclosure of detailed information about financial instruments [line items] |
Interest rate (in percent) | 2.87%

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