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13. FINANCIAL INSTRUMENTS (Details 10)	Dec. 31, 2018 R$ / $ R$ / €
USD
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	3.8748
USD | Probable Scenario
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	3.7626
USD | Scenario 1
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	4.8435
USD | Scenario 2
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	5.8122
EUR
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate | R$ / €	4.4390
EUR | Probable Scenario
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate | R$ / €	4.2833
EUR | Scenario 1
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate | R$ / €	5.5488
EUR | Scenario 2
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate | R$ / €	6.6585
USD x EUR
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	1.1456
USD x EUR | Probable Scenario
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	1.1346
USD x EUR | Scenario 1
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	1.4320
USD x EUR | Scenario 2
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Exchange rate	1.7184

X

- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2018-01-01
-Paragraph 112
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+ References

No definition available.

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