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v3.23.1

Commitments for Expenditure - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2022 t
Disclosure of Commitments for Expenditure [Line Items] |
Contracted quantity of uranium | 1,418

X
- Definition Contracted quantity of uranium. + References No definition available. + Details
Name: | kep_ContractedQuantityOfUranium
Namespace Prefix: | kep_
Data Type: | dtr-types:massItemType
Balance Type: | na
Period Type: | duration

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