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22. RELATED-PARTY BALANCES AND TRANSACTIONS (Details 1) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
P&L |  |  |
Sales | R$ 1,674,235 | R$ 1,122,834 | R$ 1,278,751
Purchases | (1,140,632) | (1,958,958) | (1,418,282)
Financial income (expenses) |  |  |
Interest | 37,516 | 64,289 | 48,796
Exchange rate variations, net |  | 3,586 | 13,611
Financial investments | 1,190,489 |  |
Other operating income and expenses | (5,224,682) | (4,631,236) | 83,332
Net income for the year | 4,292,618 | 2,244,511 | 5,200,583
Joint-ventures e joint operation [member] |  |  |
P&L |  |  |
Sales | 843 |  | 414
Purchases | (1,036,420) | (1,133,142) | (1,307,695)
Financial income (expenses) |  |  |
Interest | 19,095 | 43,790 | 33,911
Other operating income and expenses |  | (14,939) |
Net income for the year | (1,016,482) | (1,104,291) | (1,273,369)
Subsidiaries and associates [member] |  |  |
P&L |  |  |
Sales | 104,400 | 75,630 | 100,608
Purchases |  | (231,140) |
Financial income (expenses) |  |  |
Interest |  |  | 234
Net income for the year | 104,400 | (155,510) | 100,842
Other related parties [member] |  |  |
P&L |  |  |
Sales | 1,568,992 | 1,047,204 | 1,177,730
Purchases | (104,212) | (594,676) | (110,587)
Financial income (expenses) |  |  |
Interest | 18,421 | 20,499 | 14,651
Exchange rate variations, net |  | 3,586 | 13,611
Financial investments | 1,190,489 |  |
Other operating income and expenses |  | (136,004) |
Net income for the year | R$ 2,673,690 | R$ 340,609 | R$ 1,095,404

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