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Finance Income and Expenses (Tables) | 12 Months Ended
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Dec. 31, 2017
Text block1 [abstract] |
Summary of Financial Income and Expenses |
|  | 2017 |  |  | 2016 |  |  | 2015 |
FINANCE INCOME |  |  |  |  |  |  |  |  |  |  |  |
Income from cash investments |  |  | 205 |  |  |  | 317 |  |  |  | 251 |
Arrears fees on sale of energy |  |  | 261 |  |  |  | 277 |  |  |  | 230 |
Foreign exchange variations |  |  | 19 |  |  |  | 62 |  |  |  | 76 |
Monetary variations |  |  | 46 |  |  |  | 106 |  |  |  | 36 |
Monetary variations – CVA |  |  | — |  |  |  | 204 |  |  |  | 68 |
Monetary updating on Court escrow deposits |  |  | 191 |  |  |  | 46 |  |  |  | 212 |
Pasep and Cofins charged on finance income |  |  | (53 | ) |  |  | (88 | ) |  |  | (84 | )
Other |  |  | 135 |  |  |  | 117 |  |  |  | 74 |
|  |  | 804 |  |  |  | 1,041 |  |  |  | 863 |
FINANCE EXPENSES |  |  |  |  |  |  |  |  |  |  |  |
Costs of loans and financings |  |  | (1,466 | ) |  |  | (1,860 | ) |  |  | (1,370 | )
Cost of debt – amortization of transaction cost |  |  | (67 | ) |  |  | (68 | ) |  |  | (16 | )
Foreign exchange variations |  |  | (73 | ) |  |  | (35 | ) |  |  | (172 | )
Monetary updating – loans and financings |  |  | (109 | ) |  |  | (245 | ) |  |  | (387 | )
Monetary updating – onerous concessions |  |  | — |  |  |  | (3 | ) |  |  | (11 | )
Charges and monetary updating on post-retirement obligation |  |  | (65 | ) |  |  | (103 | ) |  |  | (129 | )
Losses on financial instruments |  |  | (32 | ) |  |  | — |  |  |  | — |
Monetary updating – CCEE obligations |  |  | — |  |  |  | (10 | ) |  |  | — |
Monetary updating – CVA |  |  | (41 | ) |  |  | — |  |  |  | — |
Monetary updating – AFAC |  |  | 239 |  |  |  | — |  |  |  | — |
Monetary updating – Advance sales of power supply |  |  | (45 | ) |  |  | — |  |  |  | — |
Adjustment to present value |  |  | (2 | ) |  |  | — |  |  |  | — |
Other |  |  | (139 | ) |  |  | (154 | ) |  |  | (119 | )
|  |  | (1,800 | ) |  |  | (2,478 | ) |  |  | (2,204 | )
NET FINANCE INCOME (EXPENSES) |  |  | (996 | ) |  |  | (1,437 | ) |  |  | (1,341 | )

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