| Financial Liabilities | | December 2017 ThU.S.$ | | December 2016 ThU.S.$ | | ||
| Total Financial Liabilities | | | 5,007,465 | | | 5,110,088 | |
| Financial liabilities at fair value through profit or loss (held for trading) | | | 137 | | | 336 | |
| Hedging Liabilities | | | 5,256 | | | 87,027 | |
| Financial Liabilities Measured at Amortized Cost | | | 5,002,072 | | | 5,022,725 | |