30. Other Operating Income and Expenses
Details of other operating income and expenses for the years ended December 31, 2015, 2016 and 2017, are as follows:
| 2015 | 2016 | 2017 | ||||||||||
| (In millions of Korean won) | ||||||||||||
|
Other operating income |
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|
Revenue related to available-for-sale financial assets |
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Gain on redemption of available-for-sale financial assets |
￦ | 312 | ￦ | 226 | ￦ | 884 | ||||||
|
Gain on sale of available-for-sale financial assets |
404,144 | 236,344 | 113,001 | |||||||||
|
Reversal for impairment on available-for-sale financial assets |
265 | 328 | — | |||||||||
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Sub-total |
404,721 | 236,898 | 113,885 | |||||||||
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Revenue related to held-to-maturity financial assets |
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|
Gain on redemption of held-to-maturity financial assets |
— | — | 374 | |||||||||
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Sub-total |
— | — | 374 | |||||||||
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Gain on foreign exchange transactions |
2,464,723 | 3,567,560 | 2,520,168 | |||||||||
|
Dividend income |
96,829 | 134,989 | 276,829 | |||||||||
|
Others |
258,888 | 278,827 | 325,745 | |||||||||
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Total other operating income |
3,225,161 | 4,218,274 | 3,237,001 | |||||||||
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Other operating expenses |
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Expense related to available-for-sale financial assets |
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|
Loss on redemption of available-for-sale financial assets |
114 | — | 1,403 | |||||||||
|
Loss on sale of available-for-sale financial assets |
10,108 | 44,360 | 174,543 | |||||||||
|
Impairment on available-for-sale financial assets |
227,588 | 35,216 | 47,917 | |||||||||
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|
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Sub-total |
237,810 | 79,576 | 223,863 | |||||||||
|
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|
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Loss on foreign exchanges transactions |
2,406,683 | 3,303,205 | 2,472,657 | |||||||||
|
Others |
1,191,014 | 1,251,401 | 1,442,371 | |||||||||
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|
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Total other operating expenses |
3,835,507 | 4,634,182 | 4,138,891 | |||||||||
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Net other operating income (expenses) |
￦ | (610,346 | ) | ￦ | (415,908 | ) | ￦ | (901,890 | ) | |||