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8. INVESTMENTS (Details 4) - BRL (R$) R$ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 15, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
InvestmentsLineItems [Line Items] |  |  |  |
Net revenue |  | R$ 25,436,417 | R$ 22,968,885 | R$ 18,524,601
Cost of sales and services |  | 17,263,264 | 16,105,657 | 13,596,141
Gross profit |  | 8,173,153 | 6,863,228 | 4,928,460
Operating (expenses) income |  | (4,631,236) | 83,332 | (1,944,495)
Income before income tax and social contribution |  | 1,410,733 | 5,450,917 | 520,338
Current and deferred income tax and social contribution |  | (833,778) | 250,334 | 409,109
Profit (Loss) for the year | R$ 1,000,000 | R$ 2,244,511 | R$ 5,200,583 | R$ 111,229
Joint Venture [Member] | Transnordestina Logistica [Member] |  |  |  |
InvestmentsLineItems [Line Items] |  |  |  |
Direct equity interest, joint venture and joint operation |  | 47.26% | 46.30% |
Operating (expenses) income |  | R$ (18,077) | R$ (18,020) |
Financial income (expenses), net |  | (18,386) | (26,103) |
Income before income tax and social contribution |  | (36,463) | (44,123) |
Profit (Loss) for the year |  | R$ (36,463) | R$ (44,123) |
Joint Venture [Member] | CBSI [Member] |  |  |  |
InvestmentsLineItems [Line Items] |  |  |  |
Direct equity interest, joint venture and joint operation |  | 50.00% | 50.00% |
Net revenue |  | R$ 267,436 | R$ 166,080 |
Cost of sales and services |  | 233,830 | 142,254 |
Gross profit |  | 33,606 | 23,826 |
Operating (expenses) income |  | (12,328) | (10,884) |
Financial income (expenses), net |  | (1,460) | (179) |
Income before income tax and social contribution |  | 19,818 | 12,763 |
Current and deferred income tax and social contribution |  | (6,428) | (3,761) |
Profit (Loss) for the year |  | R$ 13,390 | R$ 9,002 |
Joint Venture [Member] | MRS Logistica [Member] |  |  |  |
InvestmentsLineItems [Line Items] |  |  |  |
Direct equity interest, joint venture and joint operation |  | 34.94% | 34.94% |
Net revenue |  | R$ 3,200,809 | R$ 3,726,448 |
Cost of sales and services |  | 2,382,828 | 2,476,628 |
Gross profit |  | 817,981 | 1,249,820 |
Operating (expenses) income |  | 207,840 | (313,606) |
Financial income (expenses), net |  | (268,089) | (151,839) |
Income before income tax and social contribution |  | 757,732 | 784,375 |
Current and deferred income tax and social contribution |  | (254,378) | (262,760) |
Profit (Loss) for the year |  | R$ 503,354 | R$ 521,615 |
Joint Operation [Member] | Ita Energetica [Member] |  |  |  |
InvestmentsLineItems [Line Items] |  |  |  |
Direct equity interest, joint venture and joint operation |  | 48.75% | 48.75% |
Net revenue |  | R$ 163,048 | R$ 166,358 |
Cost of sales and services |  | 83,129 | 77,829 |
Gross profit |  | 79,919 | 88,529 |
Operating (expenses) income |  | (62,660) | (60,104) |
Financial income (expenses), net |  | 1,183 | (126) |
Income before income tax and social contribution |  | 18,442 | 28,299 |
Current and deferred income tax and social contribution |  | (6,147) | (9,452) |
Profit (Loss) for the year |  | R$ 12,295 | R$ 18,847 |

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