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Measurement at Fair Value (Tables) | 12 Months Ended
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Dec. 31, 2017
Text block1 [abstract] |
Summary of Instruments Measured at Fair Value | The following is a summary of the instruments that are measured at fair value:
|  | Balance on December 31, 2017 |  |  | Fair value at December 31, 2017 |
|  | Active market – quoted price (Level 1) |  |  | No active market – Valuation technique (Level 2) |  |  | No active market – No observable inputs (Level 3) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value through profit or loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities held for trading |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank certificates of deposit |  |  | 3 |  |  |  | — |  |  |  | 3 |  |  |  | — |
Treasury Financial Notes (LFTs) |  |  | 290 |  |  |  | — |  |  |  | 290 |  |  |  | — |
Financial Notes – Banks |  |  | 740 |  |  |  | 740 |  |  |  | — |  |  |  | — |
Debentures |  |  | 11 |  |  |  | — |  |  |  | 11 |  |  |  | — |
|  |  | 1,044 |  |  |  | 740 |  |  |  | 304 |  |  |  | — |
Derivative financial instruments (swap) |  |  | 9 |  |  |  | — |  |  |  | — |  |  |  | 9 |
|  |  | 1,053 |  |  |  | 740 |  |  |  | 304 |  |  |  | 9 |
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concession financial assets related to infrastructure |  |  | 370 |  |  |  | — |  |  |  | — |  |  |  | 370 |
|  |  | 370 |  |  |  | — |  |  |  | — |  |  |  | 370 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value through profit or loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments (swap) |  |  | (41 | ) |  |  |  |  |  |  |  |  |  |  | (41 | )
Derivative financial instruments (sale options) |  |  | (816 | ) |  |  | — |  |  |  | (507 | ) |  |  | (309 | )
|  |  | (857 | ) |  |  | — |  |  |  | (507 | ) |  |  | (350 | )
|  |  | 566 |  |  |  | 740 |  |  |  | (203 | ) |  |  | 29 |
|  | Balance on December 31, 2016 |  |  | Fair value at December 31, 2016 |
|  | Active market – quoted price (Level 1) |  |  | No active market – Valuation technique (Level 2) |  |  | No active market – No observable inputs (Level 3) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held for trading |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank certificates of deposit |  |  | 33 |  |  |  | — |  |  |  | 33 |  |  |  | — |
Treasury Financial Notes (LFTs) |  |  | 193 |  |  |  | 193 |  |  |  | — |  |  |  | — |
Financial Notes – Banks |  |  | 724 |  |  |  | — |  |  |  | 724 |  |  |  | — |
Debentures |  |  | 45 |  |  |  | — |  |  |  | 45 |  |  |  | — |
|  |  | 995 |  |  |  | 193 |  |  |  | 802 |  |  |  | — |
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concession financial assets related to infrastructure |  |  | 216 |  |  |  | — |  |  |  | — |  |  |  | 216 |
|  |  | 216 |  |  |  | — |  |  |  | — |  |  |  | 216 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value through profit or loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  | (1,342 | ) |  |  | — |  |  |  | (1,150 | ) |  |  | (192 | )
|  |  | (1,342 | ) |  |  | — |  |  |  | (1,150 | ) |  |  | (192 | )
|  |  | (131 | ) |  |  | 193 |  |  |  | (348 | ) |  |  | 24 |

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- Definition The disclosure of financial assets and liabilities measured at fair value. + References No definition available. + Details
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- Definition Text block1 [abstract] + References No definition available. + Details
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