XML 223 R157.htm IDEA: XBRL DOCUMENT
v3.20.1

Intangible Assets other than Goodwill (Details) $ in Thousands, ₩ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 KRW (₩) | Dec. 31, 2018 KRW (₩) | Dec. 31, 2019 AUD ($) | Dec. 31, 2018 AUD ($)
Software | ERP system and others |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 432 | ₩ 783 |  |
Remaining amortisation period of intangible assets material to entity | 1 years and 2 months ~ 1 years and 4 months | 2 years and 2 months ~ 2 years and 4 months |  |
Software | Electricity sales information system |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 4,824 | ₩ 6,477 |  |
Remaining amortisation period of intangible assets material to entity | 3 years | 4 years |  |
Copyrights, patents rights and other industrial rights | Smart technology verification and standard design project conducting right |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 6,787 | ₩ 9,256 |  |
Remaining amortisation period of intangible assets material to entity | 2 years and 9 months | 3 years and 9 months |  |
Copyrights, patents rights and other industrial rights | Contributions to ARP NRC DC |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 34,755 | ₩ 46,594 |  |
Remaining amortisation period of intangible assets material to entity | 8 years | 9 years |  |
Mining rights | Mining right of Bylong mine |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | $ |  |  | $ 0 | $ 401,225
Remaining amortisation period of intangible assets material to entity | The carrying amount of mining right does not exist, because KEPCO Australia Pty., Ltd. and KEPCO Bylong Australia Pty., Ltd. recognized impairment losses in full during the year ended December 31, 2019. | Mining rights are amortized using the units-of-production method and the amortization has not commenced yet. |  |
Development expenditures | Electricity sales information system |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 15,283 | ₩ 22,337 |  |
Remaining amortisation period of intangible assets material to entity | 2 years and 3 months | 3 years and 3 months |  |
Usage rights of donated assets and other | Dangjin power plant load facility usage right |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 7,870 | ₩ 14,167 |  |
Remaining amortisation period of intangible assets material to entity | 1 years 3 months | 2 years 3 months |  |
Usage rights of donated assets and other | Sejong Haengbogdosi sharing charge |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 31,385 | ₩ 35,923 |  |
Remaining amortisation period of intangible assets material to entity | 6 years and 11 months | 7 years and 11 months |  |
Others | Occupancy and use of public waters |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 92,446 | ₩ 97,858 |  |
Remaining amortisation period of intangible assets material to entity | 17 years 1 months | 18 years 1 months |  |
Others | Business rights |  |  |  |
Disclosure of intangible assets material to entity [Line Items] |  |  |  |
Carrying value | ₩ 171,955 |  |  |
Remaining amortisation period of intangible assets material to entity | 29 years 11 months |  |  |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfIntangibleAssetsMaterialToEntityLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of intangible assets that are material to the entity’s financial statements. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 122 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_122_b&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=kep_ErpSystemAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=kep_ElectricitySalesInformationSystemMember
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_IntangibleAssetsMaterialToEntityAxis=kep_SmartTechnologyVerificationAndStandardDesignProjectConductingRightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=kep_ContributionsToARPNRCDCMember
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_IntangibleAssetsMaterialToEntityAxis=kep_MiningRightOfBylongMineMember
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=kep_UsageRightsOfDonatedAssetsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=kep_DangjinPowerPlantLoadFacilityUsageRightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=kep_SejongHaengbogdosiSharingChargeMember
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: |

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=kep_OccupancyAndUseOfPublicWatersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_IntangibleAssetsMaterialToEntityAxis=ifrs-full_ServiceConcessionRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |