| (a) | Details of other income for the years ended December 31, 2015, 2016 and 2017 are as follows: |
| (In millions of won) | ||||||||||||
| 2015 | 2016 | 2017 | ||||||||||
|
Foreign currency gain |
1,221,066 | 1,543,909 | 969,425 | |||||||||
|
Gain on disposal of property, plant and equipment |
18,179 | 14,637 | 101,227 | |||||||||
|
Gain on disposal of Intangible assets |
— | — | 308 | |||||||||
|
Reversal of impairment loss on intangible assets |
80 | — | 35 | |||||||||
|
Rental income |
4,858 | 5,152 | 2,212 | |||||||||
|
Others |
29,718 | 28,103 | 8,539 | |||||||||
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| 1,273,901 | 1,591,801 | 1,081,746 | ||||||||||
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