XML 272 R257.htm IDEA: XBRL DOCUMENT
v3.25.1

Risk Management - Summary of Maturity Analysis for Non Derivative Financial Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings |  | ₩ 22,650,800 | ₩ 23,942,549
Debt securities |  | 126,906,032 | 131,182,096
Lease liabilities |  | 4,120,634 | 4,235,100
Trade and other payables | [1] | 10,321,100 | 10,264,050
Financial guarantee contracts | [2] | 5,151,554 | 4,399,189
Non-derivative financial liabilities, undiscounted cash flows |  | 169,150,120 | 174,022,984
Financial guarantee liabilities |  | 30,924 | 49,992
Less than 1 year |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings |  | 18,887,527 | 20,347,945
Debt securities |  | 28,967,125 | 30,530,984
Lease liabilities |  | 632,878 | 641,525
Trade and other payables | [1] | 8,807,823 | 8,477,209
Financial guarantee contracts | [2] | 3,156,187 | 121,415
Non-derivative financial liabilities, undiscounted cash flows |  | 60,451,540 | 60,119,078
1~2 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings |  | 430,883 | 187,896
Debt securities |  | 29,601,867 | 28,858,140
Lease liabilities |  | 553,030 | 588,850
Trade and other payables | [1] | 354,778 | 364,443
Financial guarantee contracts | [2] | 1,712,801 | 2,546,689
Non-derivative financial liabilities, undiscounted cash flows |  | 32,653,359 | 32,546,018
2~5 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings |  | 1,300,087 | 627,467
Debt securities |  | 39,451,207 | 41,793,383
Lease liabilities |  | 1,264,310 | 1,309,995
Trade and other payables | [1] | 631,653 | 833,394
Financial guarantee contracts | [2] | 270,806 | 1,645,488
Non-derivative financial liabilities, undiscounted cash flows |  | 42,918,063 | 46,209,727
More than 5 years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings |  | 2,032,303 | 2,779,241
Debt securities |  | 28,885,833 | 29,999,589
Lease liabilities |  | 1,670,416 | 1,694,730
Trade and other payables | [1] | 526,846 | 589,004
Financial guarantee contracts | [2] | 11,760 | 85,597
Non-derivative financial liabilities, undiscounted cash flows |  | ₩ 33,127,158 | ₩ 35,148,161
[1] | Excludes lease liabilities.
[2] | This represents the total guarantee amounts associated with the financial guarantee contracts. Financial guarantee liabilities which are recognized as of December 31, 2023 and 2024 are ￦49,992 and ￦30,924 million, respectively.

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

X
- Definition The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 58 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_58&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph B11D -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11D_a&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
Name: | ifrs-full_GrossLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of contractual undiscounted cash flows in relation to non-derivative financial liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 39 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_39_a&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of contractual undiscounted cash flows in relation to trade and other payables. [Refer: Trade and other payables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph IG31A -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph B11D -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_B11D&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
Name: | ifrs-full_TradeAndOtherPayablesUndiscountedCashFlows
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Bond issued undiscounted cash flows. + References No definition available. + Details
Name: | kep_BondIssuedUndiscountedCashFlows
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Borrowings undiscounted cash flows. + References No definition available. + Details
Name: | kep_BorrowingsUndiscountedCashFlows
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Financial guarantee liabilities. + References No definition available. + Details
Name: | kep_FinancialGuaranteeLiabilities
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantee obligation maximum exposure. + References No definition available. + Details
Name: | kep_GuaranteeObligationMaximumExposure
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |