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FINANCIAL INCOME (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
FINANCIAL INCOME |  |  |
Income from short-term investments | R$ 85,153 | R$ 142,965 | R$ 270,742
Interest income and other financial income | 141,462 | 109,080 | 107,660
Financial Income | 226,615 | 252,045 | 378,402
Interest on debt | (1,323,448) | (1,540,797) | (1,471,526)
Monetary variation and other financial expenses | (402,836) | (469,208) | (308,840)
Financial expenses | (1,726,284) | (2,010,005) | (1,780,366)
Exchange Variation, net | (4,057) | 851,635 | (1,564,017)
Reversal of monetary update of contingent liabilities, net | 369,819 |  |
Gains and losses on financial instruments, net | (9,441) | (38,930) | 87,085
Financial result, net | R$ (1,143,348) | R$ (945,255) | R$ (2,878,896)

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