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35 Financial Instruments (Details 10) - BRL (R$) R$ / shares in Units, R$ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 02, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Less: Cash and cash equivalents |  | R$ (2,941,727) | R$ (1,948,409) | R$ (1,040,075) | R$ (982,073)
Net income | R$ 2,070,551 | 2,062,869 | 1,444,004 | 1,118,255 |
Deferred IRPJ and CSLL |  | 205,771 | (68,072) | (105,257) |
Provision for IRPJ and CSLL |  | 433,555 | 580,065 | 379,943 |
Depreciation and amortization |  | 1,093,836 | 749,179 | R$ 731,599 |
Capital Management Risk [Member] |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |
Loans and financing |  | 3,142,383 | 4,047,307 |  |
Debentures |  | 8,429,710 | 7,518,131 |  |
Less: Cash and cash equivalents |  | (2,941,727) | (1,948,409) |  |
Less: Bonds and securities (current) |  | (3,112) | (124,862) |  |
Less: Bonds and securities (noncurrent) |  | (121,617) | (112,604) |  |
Less: Collaterals and escrow accounts STN |  | (98,433) | (89,555) |  |
Adjusted net debt |  | 8,407,204 | 9,290,008 |  |
Net income |  | 2,062,869 | 1,444,004 |  |
Equity in earnings of investees |  | (106,757) | (135,888) |  |
Deferred IRPJ and CSLL |  | 205,771 | (68,072) |  |
Provision for IRPJ and CSLL |  | 433,555 | 580,065 |  |
Financial expenses (income), net |  | (488,486) | (438,050) |  |
Depreciation and amortization |  | 1,093,836 | 749,179 |  |
Adjusted ebitda |  | R$ 4,177,760 | R$ 3,007,338 |  |
Adjusted net debt / Ebitda (in R$ per share) |  | R$ 2.01 | R$ 3.09 |  |

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