XML 268 R253.htm IDEA: XBRL DOCUMENT
v3.25.1

Risk Management - Summary of Sensitivity Analysis for Interest Rates (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Increase (decrease) of profit before income tax |  |  |
Disclosure Of Sensitivity Analysis For Interest Rates [Line Items] |  |  |
1% Increase |  | ₩ (142,237) | ₩ (125,076)
1% Decrease |  | 142,237 | 125,076
Increase (decrease) of shareholder's equity |  |  |
Disclosure Of Sensitivity Analysis For Interest Rates [Line Items] |  |  |
1% Increase | [1] | (142,237) | (125,076)
1% Decrease | [1] | ₩ 142,237 | ₩ 125,076
[1] | The effect on the shareholders’ equity excluding the impact of income taxes.

X
- Definition Disclosure of sensitivity analysis for interest rates [line item]. + References No definition available. + Details
Name: | kep_DisclosureOfSensitivityAnalysisForInterestRatesLineItems
Namespace Prefix: | kep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase decrease due to decrease in interest rates. + References No definition available. + Details
Name: | kep_IncreaseDecreaseDueToDecreaseInInterestRates
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase decrease due​ to increase in interest rates. + References No definition available. + Details
Name: | kep_IncreaseDecreaseDueToIncreaseInInterestRates
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | kep_EffectOfAccountsForSensitivityAnalysisAxis=kep_IncreaseDecreaseOfIncomeBeforeIncomeTaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_EffectOfAccountsForSensitivityAnalysisAxis=kep_ShareholdersEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |