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Finance Expenses (Tables) | 12 Months Ended
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Dec. 31, 2018
Finance Expenses [Abstract] |
Finance Expenses |
Finance expenses for the years ended December 31, 2016, 2017 and 2018 are as follows:
|  |  |  |  | 2016 |  |  | 2017 |  |  | 2018 |
|  |  |  |  | In millions of won |
Interest expense |  |  | ￦ |  |  |  | 1,752,868 |  |  |  | 1,789,552 |  |  |  | 1,868,458 |
Losses on sale of financial assets |  |  |  |  |  |  | 9 |  |  |  | 2,343 |  |  |  | 1 |
Losses on valuation of financial assets at fair value through profit or loss |  |  |  |  |  |  | — |  |  |  | — |  |  |  | 6,616 |
Impairment of available-for-sale financial assets |  |  |  |  |  |  | 86,703 |  |  |  | 2,713 |  |  |  | — |
Losses on valuation of derivatives |  |  |  |  |  |  | 5,762 |  |  |  | 890,832 |  |  |  | 46,740 |
Losses on transaction of derivatives |  |  |  |  |  |  | 101,987 |  |  |  | 198,218 |  |  |  | 32,448 |
Losses on foreign currency translation |  |  |  |  |  |  | 406,849 |  |  |  | 207,944 |  |  |  | 393,859 |
Losses on foreign currency transaction |  |  |  |  |  |  | 57,889 |  |  |  | 35,175 |  |  |  | 121,763 |
Losses on repayment of financial liabilities |  |  |  |  |  |  | 23,000 |  |  |  | 5 |  |  |  | — |
Other |  |  |  |  |  |  | 2,020 |  |  |  | 1,170 |  |  |  | 858 |
|  |  | ￦ |  |  |  | 2,437,087 |  |  |  | 3,127,952 |  |  |  | 2,470,743 |
Interest Expenses |
Interest expense included in finance expenses for the years ended December 31, 2016, 2017 and 2018 are as follows:
|  |  |  |  | 2016 |  |  | 2017 |  |  | 2018 |
|  |  |  |  | In millions of won |
Trade and other payables |  |  | ￦ |  |  |  | 68,375 |  |  |  | 57,160 |  |  |  | 42,830 |
Short-term borrowings |  |  |  |  |  |  | 6,969 |  |  |  | 35,891 |  |  |  | 32,545 |
Long-term borrowings |  |  |  |  |  |  | 91,584 |  |  |  | 87,011 |  |  |  | 92,243 |
Debt securities |  |  |  |  |  |  | 1,922,900 |  |  |  | 1,698,232 |  |  |  | 1,771,544 |
Other financial liabilities |  |  |  |  |  |  | 482,428 |  |  |  | 491,665 |  |  |  | 505,112 |
|  |  |  |  |  |  | 2,572,256 |  |  |  | 2,369,959 |  |  |  | 2,444,274 |
Less: Capitalized borrowing costs |  |  |  |  |  |  | (819,388 | ) |  |  | (580,407 | ) |  |  | (575,816 | )
|  |  | ￦ |  |  |  | 1,752,868 |  |  |  | 1,789,552 |  |  |  | 1,868,458 |
Capitalization rates for the years ended December 31, 2016, 2017 and 2018 are 2.29%~4.16%, 2.30%~3.60% and 2.17%~3.86%, respectively.

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