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5. Risk Management (Details 5) - BRL (R$) R$ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Risk Management Details 5 |  |  |  |
Borrowings and financing | R$ 12,100,966 | R$ 11,964,143 | R$ 13,121,600 |
(-) Cash and cash equivalents | (2,283,047) | (1,886,221) | (1,639,214) | R$ (1,722,991)
Net debt | 9,817,919 | 10,077,922 |  |
Total equity | 17,513,009 | 15,419,211 | R$ 13,716,606 | R$ 13,304,403
Total capital | R$ 27,330,928 | R$ 25,497,133 |  |
Leverage ratio | 36.00% | 40.00% |  |

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