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22. NET SALES AND SERVICES REVENUE (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Gross revenue | R$ 26,570,460 | R$ 21,467,583 | R$ 19,777,825
Sales returns and discounts | (234,851) | (262,989) | (190,415)
Taxes on sales | (3,366,724) | (2,679,993) | (2,438,461)
Deductions | (3,601,575) | (2,942,982) | (2,628,876)
Net revenues | 22,968,885 | 18,524,601 | 17,148,949
Domestic market |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Gross revenue | 14,752,901 | 11,487,011 | 10,206,195
Net revenues | 11,353,437 | 8,706,466 | 7,729,913
Foreign market |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Gross revenue | 11,817,559 | 9,980,572 | 9,571,630
Net revenues | R$ 11,615,448 | R$ 9,818,135 | R$ 9,419,036

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