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v3.19.1

Other Income and Expense (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Other non-operating income [Abstract] |  |  |  |
Reversal of other provisions |  | ₩ 12,700 | ₩ 35,265 | ₩ 22,034
Reversal of allowance for doubtful accounts |  | 143 | 2,166 | 5,489
Gains on government grants |  | 482 | 430 | 111
Gains on assets contributed |  | 17,336 | 4,218 | 12,254
Gains on liabilities exempted |  | 10,303 | 3,166 | 1,959
Compensation and reparations revenue |  | 89,901 | 89,196 | 114,530
Revenue from research contracts |  | 6,818 | 12,580 | 13,143
Income related to transfer of assets from customers |  | 594,548 | 478,973 | 427,297
Rental income |  | 186,631 | 192,136 | 211,580
Others of Other Income |  | 51,032 | 50,988 | 31,787
Refund of claim for rectification |  | 8,933 | 9,655 | 8,722
Adjustment of research project |  | 2,267 | 3,884 | 4,148
Maintenance expenses on lease building |  | 176 | 135 | 354
Training expenses |  | 3,220 | 3,045 | 4,478
Deposit redemption |  | 7 | 34 | 991
Reversal of expenses on litigation |  | 753 | 360 | 893
Revenue on royalty fee |  | 6,909 | 2,888 | 2,486
Reimbursement of insurance fee |  | 7,145 | 1,498 | 0
Gains on guarantee contracts |  | 39 | 456 | 2,796
Miscellaneous other non-operating income |  | 21,583 | 29,033 | 6,919
Other non-operating income |  | 969,894 | 869,118 | 840,184
Other non-operating expense |  |  |  |
Compensation and indemnification expense |  | 23,437 | 37 | 0
Accretion expenses of other provisions |  | 41,924 | 7,535 | 4,556
Depreciation expenses on investment properties |  | 923 | 1,176 | 678
Depreciation expenses on idle assets |  | 6,547 | 6,644 | 6,639
Other bad debt expense |  | 17,827 | 1,778 | 4,585
Donations |  | 63,743 | 119,421 | 114,094
Others of Other Expense |  | 76,929 | 43,464 | 58,072
Operating expenses related to the idle assets |  | 47 | 136 | 459
Research grants |  | 461 | 1,180 | 1,461
Supporting expenses on farming and fishing village |  | 13,537 | 11,956 | 15,201
Operating expenses on fitness center |  | 4,788 | 3,498 | 2,706
Expenses on adjustment of research and development grants |  | 404 | 806 | 0
Taxes and dues |  | 199 | 2,270 | 4,582
Expenses on R&D supporting |  | 53 | 5,459 | 690
Miscellaneous other non-operating expense | [1] | 57,440 | 18,159 | 32,973
Other non-operating expense |  | ₩ 231,330 | ₩ 180,055 | ₩ 188,624
[1] | Others include KRW38,886 million of impairment loss on construction-in-progress of Cheonji unit 1 and 2 and Daejin unit 1 and 2 as described in note 2.

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