XML 185 R173.htm IDEA: XBRL DOCUMENT
v3.22.1

Intangible Assets other than Goodwill - Summary of Intangible Asset Explanatory and Changes in intangible assets (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Changes in intangible assets other than goodwill |  |  |
Impairment | ₩ 0 | ₩ (3,599) | ₩ (513,609)
Intangible assets other than goodwill |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 1,055,730 | 1,069,976 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 152,639 | 120,371 |
Disposal | (132) | (9,707) |
Amortization | (166,161) | (170,466) |
Impairment | 14 | (3,599) |
Others | 1,987 | 49,155 |
Ending balance | 1,044,077 | 1,055,730 | 1,069,976
Intangible assets other than goodwill | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 3,769,026 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 3,940,927 | 3,769,026 |
Intangible assets other than goodwill | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (2,138,536) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (2,310,088) | (2,138,536) |
Intangible assets other than goodwill | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (562,303) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (575,454) | (562,303) |
Intangible assets other than goodwill | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (12,457) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (11,308) | (12,457) |
Software |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 152,027 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 162,505 | 152,027 |
Software | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 152,163 | 164,995 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 18,834 | 14,101 |
Disposal | (1) | 0 |
Amortization | (77,881) | (77,501) |
Impairment | 0 | 0 |
Others | 69,481 | 50,568 |
Ending balance | 162,596 | 152,163 | 164,995
Software | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 775,667 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 867,185 | 775,667 |
Software | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (623,504) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (704,589) | (623,504) |
Software | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Software | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (136) | (235) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 64 | 99 |
Impairment | 0 | 0 |
Others | (19) | 0 |
Ending balance | (91) | (136) | (235)
Licences and franchises |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance |  | 0 |
Licences and franchises | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 547 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance |  | 547 |
Licences and franchises | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (547) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance |  | (547) |
Licences and franchises | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance |  | 0 |
Licences and franchises | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance |  | 0 |
Copyrights, patents rights and other industrial rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 42,916 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 35,187 | 42,916 |
Copyrights, patents rights and other industrial rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 42,916 | 53,261 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 166 | 369 |
Disposal | (131) | (390) |
Amortization | (7,771) | (8,352) |
Impairment | 0 | 0 |
Others | 7 | (1,972) |
Ending balance | 35,187 | 42,916 | 53,261
Copyrights, patents rights and other industrial rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 101,866 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 103,428 | 101,866 |
Copyrights, patents rights and other industrial rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (49,772) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (59,063) | (49,772) |
Copyrights, patents rights and other industrial rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (9,178) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (9,178) | (9,178) |
Copyrights, patents rights and other industrial rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Mining rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 42,390 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 41,902 | 42,390 |
Mining rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 42,390 | 43,723 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 1,022 | 1,664 |
Disposal | 0 | 0 |
Amortization | (3,526) | (4,380) |
Impairment | 0 | 0 |
Others | 2,016 | 1,383 |
Ending balance | 41,902 | 42,390 | 43,723
Mining rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 604,703 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 623,122 | 604,703 |
Mining rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (34,062) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (39,803) | (34,062) |
Mining rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (528,251) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (541,417) | (528,251) |
Mining rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Development expenditures |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 90,123 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 69,124 | 90,123 |
Development expenditures | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 95,166 | 93,843 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 309 | 10,273 |
Disposal | 0 | 0 |
Amortization | (37,033) | (32,034) |
Impairment | 0 | 0 |
Others | 14,502 | 23,084 |
Ending balance | 72,944 | 95,166 | 93,843
Development expenditures | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 958,035 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 978,768 | 958,035 |
Development expenditures | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (862,850) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (905,805) | (862,850) |
Development expenditures | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (19) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (19) | (19) |
Development expenditures | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (5,043) | (1,492) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 1,439 | 1,453 |
Impairment | 0 | 0 |
Others | (216) | (5,004) |
Ending balance | (3,820) | (5,043) | (1,492)
Intangible assets under development |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 59,815 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 74,104 | 59,815 |
Intangible assets under development | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 67,018 | 60,490 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 51,988 | 53,638 |
Disposal | 0 | 0 |
Amortization | 0 | 0 |
Impairment | 0 | (23) |
Others | (37,576) | (47,087) |
Ending balance | 81,430 | 67,018 | 60,490
Intangible assets under development | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 79,862 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 94,275 | 79,862 |
Intangible assets under development | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Intangible assets under development | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (12,844) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (12,845) | (12,844) |
Intangible assets under development | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (7,203) | (11,029) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 0 | 0 |
Impairment | 0 | 0 |
Others | (123) | 3,826 |
Ending balance | (7,326) | (7,203) | (11,029)
Usage rights of donated assets and other |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 184,475 |  |
Changes in intangible assets other than goodwill |  |  |
Impairment |  | 0 |
Ending balance | 169,783 | 184,475 |
Usage rights of donated assets and other | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 184,475 | 193,161 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | (13,594) | (18,448) |
Impairment | 0 |  |
Others | (1,098) | 9,762 |
Ending balance | 169,783 | 184,475 | 193,161
Usage rights of donated assets and other | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 592,930 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 592,870 | 592,930 |
Usage rights of donated assets and other | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (408,455) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (423,087) | (408,455) |
Usage rights of donated assets and other | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Usage rights of donated assets and other | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Leasehold rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 6,340 |  |
Changes in intangible assets other than goodwill |  |  |
Impairment | 0 |  |
Ending balance | 5,848 | 6,340 |
Leasehold rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 6,340 | 5,318 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | (834) | (831) |
Impairment |  | 0 |
Others | 342 | 1,853 |
Ending balance | 5,848 | 6,340 | 5,318
Leasehold rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 27,843 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 28,185 | 27,843 |
Leasehold rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (21,503) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (22,337) | (21,503) |
Leasehold rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Leasehold rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Greenhouse gas emissions rights |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 61,373 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 78,137 | 61,373 |
Greenhouse gas emissions rights | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 61,373 | 41,656 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 78,091 | 37,109 |
Disposal | 0 | (9,271) |
Amortization | (31) | 0 |
Impairment | 0 | 0 |
Others | (61,296) | (8,121) |
Ending balance | 78,137 | 61,373 | 41,656
Greenhouse gas emissions rights | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 61,373 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 78,137 | 61,373 |
Greenhouse gas emissions rights | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Greenhouse gas emissions rights | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Greenhouse gas emissions rights | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 0 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 0 | 0 |
Others |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 416,271 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 407,487 | 416,271 |
Others | Carrying Amount Other than Government Grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 416,346 | 426,364 |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 2,229 | 3,217 |
Disposal | 0 | (46) |
Amortization | (26,998) | (30,476) |
Impairment | 14 | (3,576) |
Others | 15,967 | 20,863 |
Ending balance | 407,558 | 416,346 | 426,364
Others | Acquisition cost |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | 566,200 |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | 574,957 | 566,200 |
Others | Accumulated amortization |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (137,843) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (155,404) | (137,843) |
Others | Accumulated impairment [member] |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (12,011) |  |
Changes in intangible assets other than goodwill |  |  |
Ending balance | (11,995) | (12,011) |
Others | Government grants |  |  |
Reconciliation of changes in intangible assets other than goodwill |  |  |
Beginning balance | (75) | (79) |
Changes in intangible assets other than goodwill |  |  |
Acquisition | 0 | 0 |
Disposal | 0 | 0 |
Amortization | 4 | 4 |
Impairment | 0 | 0 |
Others | 0 | 0 |
Ending balance | ₩ (71) | ₩ (75) | ₩ (79)

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

X
- Definition The decrease in intangible assets other than goodwill resulting from disposals. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_ii&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_DisposalsIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of impairment loss recognised in profit or loss for intangible assets other than goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Paragraph 118 -Subparagraph e -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_iv&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_ImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

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

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=kep_IntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=kep_AcquisitionRelatedCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedDepreciationAndAmortisationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=ifrs-full_AccumulatedImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=kep_GovernmentGrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_ComputerSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis=kep_CarryingAmountOtherThanGovernmentGrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_LicencesAndFranchisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_MiningRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_CapitalisedDevelopmentExpenditureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_IntangibleAssetsUnderDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=kep_UsageRightsOfDonatedAssetsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=kep_LeaseAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=kep_GreenhouseGasEmissionsRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis=ifrs-full_OtherIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |