XML 210 R194.htm IDEA: XBRL DOCUMENT
v3.21.1

Other Income and Expense (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Other non-operating income [Abstract] |  |  |
Reversal of other provisions | ₩ 25,826 | ₩ 16,542 | ₩ 12,700
Reversal of allowance for doubtful accounts | 2,465 | 0 | 143
Gains on government grants | 269 | 281 | 482
Gains on assets contributed | 24,324 | 6,921 | 17,336
Gains on liabilities exempted | 1,314 | 916 | 10,303
Compensation and reparations revenue | 95,407 | 113,292 | 89,901
Revenue from research contracts | 4,001 | 5,276 | 6,818
Income related to transfer of assets from customers | 643,477 | 604,808 | 594,548
Rental income | 193,567 | 191,088 | 186,631
Others of Other Income | 45,798 | 58,849 | 51,032
Refund of claim for rectification | 11,880 | 1,969 | 8,933
Adjustment of research project | 2,150 | 3,294 | 2,267
Maintenance expenses on lease building | 2,785 | 153 | 176
Training expenses | 3,852 | 3,167 | 3,220
Deposit redemption | 314 | 436 | 7
Reversal of expenses on litigation | 620 | 9,926 | 753
Revenue on royalty fee | 0 | 0 | 6,909
Reimbursement of insurance fee | 22 | 610 | 7,145
Gains on guarantee contracts | 134 | 135 | 39
Miscellaneous other non-operating income | 24,041 | 39,159 | 21,583
Other non-operating income | 1,036,448 | 997,973 | 969,894
Other non-operating expense |  |  |
Compensation and indemnification expense | 11,959 | 403 | 23,437
Accretion expenses of other provisions | 17,991 | 7,939 | 41,924
Depreciation expenses on investment properties | 1,453 | 5,069 | 923
Depreciation expenses on idle assets | 6,604 | 6,542 | 6,547
Other bad debt expense | 32,503 | 29,348 | 17,827
Donations | 316,981 | 64,752 | 63,743
Others of Other Expense | 30,229 | 127,860 | 76,929
Operating expenses related to the idle assets | 46 | 49 | 47
Research grants | 91 | 399 | 461
Supporting expenses on farming and fishing village | 16,115 | 13,991 | 13,537
Operating expenses on fitness center | 5,101 | 5,234 | 4,788
Expenses on adjustment of research and development grants | 720 | 554 | 404
Taxes and dues | 253 | 188 | 199
Expenses on R&D supporting | 242 | 67 | 53
Miscellaneous other non-operating expense | 7,661 | 107,378 | 57,440
Other non-operating expense | ₩ 417,720 | ₩ 241,913 | ₩ 231,330

X
- Definition The amount of depreciation recognised on investment property. [Refer: Depreciation and amortisation expense; Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2020-01-01 -Paragraph 79 -Subparagraph d -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2020-en-r&anchor=para_79_d_iv&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2020-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=40&code=ifrs-tx-2020-en-r&anchor=para_76&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DepreciationInvestmentProperty
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of expense arising from donations and subsidies. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DonationsAndSubsidiesExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of reversals of provisions that the entity does not separately disclose in the same statement or note. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_g&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_OtherReversalsOfProvisions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of income recognised from rental activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RentalIncome
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of income recognised in relation to government grants. [Refer: Government grants] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 20 -IssueDate 2020-01-01 -Paragraph 39 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=20&code=ifrs-tx-2020-en-r&anchor=para_39_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RevenueFromGovernmentGrants
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of income arising from royalties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RevenueFromRoyalties
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_AdjustmentOfResearchProject
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_CompensationAndReparationsRevenue
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_DepositRedemption
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ExpensesOfOtherCommisions
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ExpensesOnAdjustmentOfResearchAndDevelopmentGrants
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ExpensesOnRnDSupporting
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_GainsFromAssetsContributed
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_GainsFromContributionToConstruction
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_GainsFromOtherEntrustedBusiness
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_GainsOnGuaranteeContracts
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_MaintenanceExpensesOnLeaseBuilding
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_MiscellaneousOtherNonoperatingExpense
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_MiscellaneousOtherNonoperatingIncome
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OperatingExpensesOnFitnessCenter
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OperatingExpensesRelatedToTheIdleAssets
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OtherBadDebtExpenses
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OtherNonoperatingExpenseAbstract
Namespace Prefix: | kep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OtherNonoperatingIncomeAbstract
Namespace Prefix: | kep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OthersOfMiscellaneousOtherNonoperatingExpense
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_OthersOfMiscellaneousOtherNonoperatingIncome
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_RefundOfClaimForRectification
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ReimbursementExpenses
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ReimbursementOfInsuranceFee
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ResearchGrants
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ReversalOfExpensesOnLitigation
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ReversalsOfAllowanceForOtherDoubtfulAccounts
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_SupportingExpensesOnFarmingAndFishingVillage
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_TaxesAndDues
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_TransferredAmountOfProvisionOfOtherAllowance
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expense charged against earnings to allocate the cost of tangible and intangible assets over their remaining economic lives, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_OtherDepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expense related to nonoperating activities, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_OtherNonoperatingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of income related to nonoperating activities, classified as other. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_OtherNonoperatingIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration