XML 280 R265.htm IDEA: XBRL DOCUMENT
v3.23.1

Related Parties - Summary of Guarantees Provided To Related Parties (Parentheticals) (Details) - KRW (₩) ₩ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Borrowings notional amount | ₩ 6,615,470 | ₩ 3,742,184
Saemangeum Heemang Photovoltaic Co., Ltd [Member] | Kookmin Bank [Member] |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Provision of guarantees or collateral by entity | 63,400 |
Borrowings notional amount | 99,900 |
Other borrowings | 36,500 |
Saemangeum Heemang Photovoltaic Co., Ltd [Member] | Kookmin Bank [Member] | Shares [Member] |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Financial assets pledged as collateral for liabilities or contingent liabilites | 36,500 |
Derivative liabilities [Member] |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Provision of guarantees or collateral by entity | 6,760 |
Acquisition cost of the securities [Member] |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Provision of guarantees or collateral by entity | 47,067 |
Other provisions [member] |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Provision of guarantees or collateral by entity | 7,230 |
Impairment loss [Member] | Naepo Green Energy Co., Ltd [Member] |  |
Disclosure of Guarantees provided between the related parties [Line Items] |  |
Provision of guarantees or collateral by entity | ₩ 29,200 |

X
- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 14 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_14_a&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of borrowings that the entity does not separately disclose in the same statement or note. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_OtherBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of guarantees or collateral provided by the entity in related party transactions. [Refer: Guarantees [member]; Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 24 -IssueDate 2022-03-24 -Paragraph 21 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2022-en-r&anchor=para_21_h&doctype=Standard -URIDate 2022-03-24 + Details
Name: | ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=kep_SaemangeumHeemangPhotovoltaicMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_LenderAxis=kep_KookminBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_InstrumentsPledgedOrToBePledgedAxis=kep_SharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_TypeOfGuaranteesByRecognitionAxis=kep_DerivativeLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_TypeOfGuaranteesByRecognitionAxis=kep_AcquisitionCostOfTheSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_TypeOfGuaranteesByRecognitionAxis=ifrs-full_OtherProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_TypeOfGuaranteesByRecognitionAxis=kep_ImpairmentLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_RelatedPartyTransactionsByRelatedPartyAxis=kep_NaepoGreenEnergyCo.LtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |