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INVESTMENTS - Investments in associates and joint ventures (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Investments |  |  |  |
Equity | R$ 18,087,969 | R$ 12,025,935 | R$ 11,616,611 | R$ 10,124,989
Company Participation in equity | 140,934 | 14,338 |  |
Company Participation in the income of the year | 31,969 | 8,676 |  |
Company Participation in the income of the year | 31,993 | 7,576 | R$ 5,872 |
Associates |  |  |  |
Investments |  |  |  |
Company Participation in equity | 108,406 |  |  |
Company Participation in the income of the year | 11,528 |  |  |
Ensyn Corporation |  |  |  |
Investments |  |  |  |
Equity | 252 |  |  |
Income of the year | R$ (268) |  |  |
Participation equity in associate (as a percent) | 25.30% |  |  |
Company Participation in equity | R$ 21,437 |  |  |
Company Participation in the income of the year | R$ 12,860 |  |  |
Spinnova |  |  |  |
Investments |  |  |  |
Participation equity in associate (as a percent) | 24.06% |  |  |
Company Participation in equity | R$ 86,969 |  |  |
Company Participation in the income of the year | (1,332) |  |  |
Joint ventures |  |  |  |
Investments |  |  |  |
Company Participation in equity | 32,528 | 14,338 |  |
Company Participation in the income of the year | R$ 20,441 | 8,676 |  |
Ibema |  |  |  |
Investments |  |  |  |
Participation equity in joint ventures (as a percent) | 49.90% |  |  |
Company Participation in equity | R$ 28,487 | 14,338 |  |
Company Participation in the income of the year | R$ 20,307 | R$ 8,676 |  |
F&E Technologies LLC |  |  |  |
Investments |  |  |  |
Participation equity in joint ventures (as a percent) | 50.00% |  |  |
Company Participation in equity | R$ 4,041 |  |  |
Company Participation in the income of the year | R$ 134 |  |  |

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