XML 209 R196.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Employment Benefits - Summary of Expense Relating to Defined Benefit Plans by Nature (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit | ₩ 400,985 | ₩ 539,619 | ₩ 569,520
Cost of sales [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit | 285,209 | 404,243 | 416,287
Selling, general and administrative expense [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit | 73,521 | 81,457 | 95,983
Others (Construction-in-progress and others) [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Defined benefit | ₩ 42,255 | ₩ 53,919 | ₩ 57,250

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_DisclosureOfDefinedBenefitPlansLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=ifrs-full_CostOfSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=ifrs-full_SellingGeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=kep_ConstructionInProgressAndOthersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |