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22. NET SALES AND SERVICES REVENUE (Tables)
 12 Months Ended
Dec. 31, 2018
Net Sales And Services Revenue Tables Abstract  
Net sales and services revenue
         Consolidated
    12/31/2018   12/31/2017 12/31/2016
           
Gross revenue          
Domestic market   14,752,901   11,487,011 10,206,195
Foreign market   11,817,559   9,980,572 9,571,630
    26,570,460   21,467,583 19,777,825
Deductions          
Canceled sales, discounts and rebates   (234,851)   (262,989) (190,415)
Taxes on sales   (3,366,724)   (2,679,993) (2,438,461)
    (3,601,575)   (2,942,982) (2,628,876)
Net revenue   22,968,885   18,524,601 17,148,949