XML 261 R248.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Risk Management - Summary of Sensitivity Analysis for Foreign Currency Exchange Rates (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Increase (decrease) of profit before income tax |  |  |
Disclosure of sensitivity analysis for foreign currency exchange rates [Line Items] |  |  |
10% Increase |  | ₩ (1,828,308) | ₩ (1,703,053)
10% Decrease |  | 1,828,308 | 1,703,053
Increase (decrease) of equity |  |  |
Disclosure of sensitivity analysis for foreign currency exchange rates [Line Items] |  |  |
10% Increase | [1] | (1,828,308) | (1,703,053)
10% Decrease | [1] | ₩ 1,828,308 | ₩ 1,703,053
[1] | The effect on the shareholders’ equity excluding the impact of income taxes.

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

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

X
- Definition Increase decrease due to increase in foreign currency exchange rates. + References No definition available. + Details
Name: | kep_IncreaseDecreaseDueToIncreaseInForeignCurrencyExchangeRates
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: |