XML 238 R223.htm IDEA: XBRL DOCUMENT
v3.25.1

Other Components of Equity - Summary of Other Components of Equity (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Beginning balance | ₩ 37,264,750 | ₩ 42,000,256 | ₩ 65,326,706
Additional paid-in capital and others | (1,819) | 6,023 | 126,792
Shares of other comprehensive income of associates and joint ventures, net of tax | (6,346) | (27,349) | 12,305
Shares of other comprehensive income of associates and joint ventures, net of tax | 654,225 | 122,994 | 509,487
Foreign currency translation of foreign operations, net of tax | 164,628 | (17,274) | 28,387
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax | 11,870 | (3,654) | (24,415)
Others |  | 153 |
Ending balance | 41,362,833 | 37,264,750 | 42,000,256
Other Components Of Equity |  |  |
Beginning balance | 15,453,203 |  |
Ending balance | 15,733,411 | 15,453,203 |
Other capital surplus |  |  |
Beginning balance | 1,600,801 | 1,268,569 |
Changes in consolidation scope | 0 | (48) |
Additional paid-in capital and others | (7) | 0 |
Transactions between consolidated entities | 18 | 332,280 |
Ending balance | 1,600,812 | 1,600,801 | 1,268,569
Other capital surplus | Other Components Of Equity |  |  |
Beginning balance | 1,600,801 |  |
Ending balance | 1,600,812 | 1,600,801 |
Gains on disposal of Treasury stocks |  |  |
Beginning balance | 387,524 | 387,524 |
Changes in consolidation scope | 0 | 0 |
Additional paid-in capital and others | 0 | 0 |
Transactions between consolidated entities | 0 | 0 |
Ending balance | 387,524 | 387,524 | 387,524
Other Capital Surplus Other Than Gainson Disposal Of Treasury Stocks |  |  |
Beginning balance | 1,213,277 | 881,045 |
Changes in consolidation scope | 0 | (48) |
Additional paid-in capital and others | (7) | 0 |
Transactions between consolidated entities | 18 | 332,280 |
Ending balance | 1,213,288 | 1,213,277 | 881,045
Accumulated other comprehensive income (loss) |  |  |
Beginning balance | 557,430 | 496,976 |
Changes in the unrealized fair value of financial assets at FVOCI, net of tax | 100,759 | (31,665) |
Shares of other comprehensive income of associates and joint ventures, net of tax | 654,225 | 122,994 |
Foreign currency translation of foreign operations, net of tax | 99,624 | (25,950) |
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax | 11,976 | (5,078) |
Ending balance | 1,424,014 | 557,430 | 496,976
Accumulated other comprehensive income (loss) | Other Components Of Equity |  |  |
Beginning balance | 557,430 |  |
Ending balance | 1,424,014 | 557,430 |
Financial assets at fair value through other comprehensive income |  |  |
Beginning balance | (20,002) | 11,510 |
Changes in the unrealized fair value of financial assets at FVOCI, net of tax | 100,759 | (31,665) |
Shares of other comprehensive income of associates and joint ventures, net of tax | 0 | 0 |
Foreign currency translation of foreign operations, net of tax | 0 | 0 |
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax | 0 | 0 |
Others |  | 153 |
Ending balance | 80,757 | (20,002) | 11,510
Shares in other comprehensive Income (loss) of investments in associates and joint ventures |  |  |
Beginning balance | 943,733 | 820,739 |
Changes in the unrealized fair value of financial assets at FVOCI, net of tax | 0 | 0 |
Shares of other comprehensive income of associates and joint ventures, net of tax | 654,225 | 122,994 |
Foreign currency translation of foreign operations, net of tax | 0 | 0 |
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax | 0 | 0 |
Others |  | 0 |
Ending balance | 1,597,958 | 943,733 | 820,739
Reserve for gain (loss) on valuation of derivatives |  |  |
Beginning balance | (34,731) | (29,653) |
Changes in the unrealized fair value of financial assets at FVOCI, net of tax | 0 | 0 |
Shares of other comprehensive income of associates and joint ventures, net of tax | 0 | 0 |
Foreign currency translation of foreign operations, net of tax | 0 | 0 |
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax | 11,976 | (5,078) |
Others |  | 0 |
Ending balance | (22,755) | (34,731) | (29,653)
Reserve for overseas operations translation credit |  |  |
Beginning balance | (331,570) | (305,620) |
Changes in the unrealized fair value of financial assets at FVOCI, net of tax | 0 | 0 |
Shares of other comprehensive income of associates and joint ventures, net of tax | 0 | 0 |
Foreign currency translation of foreign operations, net of tax | 99,624 | (25,950) |
Net change in the unrealized fair value of derivatives using cash flow hedge accounting, net of tax | 0 | 0 |
Others |  | 0 |
Ending balance | (231,946) | (331,570) | ₩ (305,620)
Other equity |  |  |
Beginning balance | 13,294,972 |  |
Ending balance | 12,708,585 | 13,294,972 |
Other equity | Other Components Of Equity |  |  |
Beginning balance | 13,294,972 |  |
Ending balance | 12,708,585 | 13,294,972 |
Statutory revaluation reserve |  |  |
Beginning balance | 13,295,098 |  |
Ending balance | 12,708,704 | 13,295,098 |
Changes in other equity |  |  |
Beginning balance | (126) |  |
Ending balance | ₩ (119) | ₩ (126) |

X
- Definition The amount of residual interest in the assets of the entity after deducting all its liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2024-01-01 -Paragraph 24 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_24_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 1 -IssueDate 2024-01-01 -Paragraph 32 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=1&code=ifrs-tx-2024-en-r&anchor=para_32_a_i&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_a&doctype=Standard -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e&doctype=Standard -URIDate 2024-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2024-01-01 -Paragraph 93 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_b&doctype=Standard -URIDate 2024-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_Equity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The gains (losses) arising from the difference between the previous amortised cost and the fair value of financial assets reclassified out of the amortised cost into the fair value through profit or loss measurement category. [Refer: At fair value [member]; Financial assets at amortised cost] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 82 -Subparagraph ca -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_ca&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_GainsLossesArisingFromDifferenceBetweenPreviousCarryingAmountAndFairValueOfFinancialAssetsReclassifiedAsMeasuredAtFairValue
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The gains (losses) recognised in other comprehensive income on exchange differences on the translation of financial statements of foreign operations, net of tax, before reclassification adjustments. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationNetOfTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase in equity through the issue of equity instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d_iii&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_IssueOfEquity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of other comprehensive income, net of tax, after reclassification adjustments, related to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_OtherComprehensiveIncomeNetOfTaxCashFlowHedges
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of other comprehensive income, net of tax, after reclassification adjustments, related to financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 91 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share of the other comprehensive income of associates and joint ventures accounted for using the equity method that will be reclassified to profit or loss, net of tax. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 82A -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82A&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Share of the other comprehensive income of associates and joint ventures accounted for using the equity method that will not be reclassified to profit or loss, net of tax. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 82A -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82A&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Changes in consolidation scope In Other Components Of Equity. + References No definition available. + Details
Name: | kep_ChangesInConsolidationScopeInOtherComponentsOfEquity
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other changes equity in other components of equity. + References No definition available. + Details
Name: | kep_OtherChangesEquityInOtherComponentsOfEquity
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Transactions between consolidated entities. + References No definition available. + Details
Name: | kep_TransactionsBetweenConsolidatedEntities
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | kep_OtherComponentsOfEquityAxis=kep_OtherComponentsOfEquityAttributableToOwnersOfParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=kep_OtherCapitalSurplusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_TreasurySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=kep_OtherCapitalSurplusOtherThanGainsonDisposalOfTreasuryStocksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_AccumulatedOtherComprehensiveIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=kep_SharesInOtherComprehensiveIncomeLossOfInvestmentsInAssociatesAndJointVenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_ReserveOfCashFlowHedgesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_ReserveOfExchangeDifferencesOnTranslationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_OtherEquityInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=ifrs-full_StatutoryReserveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ComponentsOfEquityAxis=kep_ChangesInOtherEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |