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Assets Held-for-Sale (Parenthetical) (Details) ₩ in Millions | Apr. 13, 2022 KRW (₩)
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Non-current assets held for sale |
Assets Held for Sale [Line Items] |
Long term advance received | ₩ 52,666

X
- Definition Assets held for sale. + References No definition available. + Details
Name: | kep_AssetsHeldForSaleLineItems
Namespace Prefix: | kep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long term advance received. + References No definition available. + Details
Name: | kep_LongTermAdvanceReceived
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | ifrs-full_AssetsAndLiabilitiesClassifiedAsHeldForSaleAxis=ifrs-full_NoncurrentAssetsHeldForSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |