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5. Risk Management (Details 5) - BRL (R$) R$ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Risk Management Details 5Abstract |  |  |  |
Borrowings and financing | R$ 13,152,796 | R$ 12,100,966 | R$ 11,964,143 |
(-) Cash and cash equivalents | (3,029,191) | (2,283,047) | (1,886,221) | R$ (1,639,214)
Net debt | 10,123,605 | 9,817,919 |  |
Total equity | 19,551,688 | 17,513,009 | R$ 15,419,211 | R$ 13,716,606
Total capital | R$ 29,675,293 | R$ 27,330,928 |  |
Leverage ratio | 34.00% | 36.00% |  |

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