XML 160 R145.htm IDEA: XBRL DOCUMENT
v3.23.1

Other Financial Assets - Summary of Long-Term and Short-Term Financial Instruments (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Short-term financial instruments |  |
Long / short-term financial instruments [Line Items] |  |
Time deposits | ₩ 428,813 | ₩ 976,899
CD | 30,000 | 0
Others | 207,945 | 301,115
Long / short-term financial instruments | 666,758 | 1,278,014
Long-term financial instruments |  |
Long / short-term financial instruments [Line Items] |  |
Time deposits | 130,570 | 103,607
CD | 0 | 0
Others | 555,752 | 346,887
Long / short-term financial instruments | ₩ 686,322 | ₩ 450,494

X
- Definition Long Short Term financial instruments. + References No definition available. + Details
Name: | kep_LongShortTermFinancialInstruments
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long short term financial instruments CD. + References No definition available. + Details
Name: | kep_LongShortTermFinancialInstrumentsCD
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Long short term financial instruments others. + References No definition available. + Details
Name: | kep_LongShortTermFinancialInstrumentsOthers
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long short term financial instruments time deposits. + References No definition available. + Details
Name: | kep_LongShortTermFinancialInstrumentsTimeDeposits
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=kep_ShortTermFinancialInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfFinancialAssetsAxis=kep_LongTermFinancialInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |