XML 161 R149.htm IDEA: XBRL DOCUMENT
v3.22.1

Non-Financial Assets - Summary of Non-Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Other Current Assets |  |
Non-Financial Assets [Line Items] |  |
Advance payment | ₩ 161,466 | ₩ 169,737
Prepaid Expenses | 756,729 | 216,073
Miscellaneous Non-Financial Assets |  |
Greenhouse gas emissions rights | 524,658 | 357,355
Other quick assets | 316,138 | 276,993
Miscellaneous Non-Financial Assets | 840,796 | 634,348
Non-Financial Assets | 1,758,991 | 1,020,158
Other Noncurrent Assets |  |
Non-Financial Assets [Line Items] |  |
Advance payment | 124,305 | 32,693
Prepaid Expenses | 151,095 | 140,730
Miscellaneous Non-Financial Assets |  |
Greenhouse gas emissions rights | 0 | 0
Other quick assets | 89,418 | 72,969
Miscellaneous Non-Financial Assets | 89,418 | 72,969
Non-Financial Assets | ₩ 364,818 | ₩ 246,392

X
- Definition The amount of non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_OtherNonfinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Receivables that represent amounts paid for goods and services before they have been delivered. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_Prepayments
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Greenhouse gas emissions rights. + References No definition available. + Details
Name: | kep_GreenhouseGasEmissionsRights
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Miscellaneous non financial assets. + References No definition available. + Details
Name: | kep_MiscellaneousNonFinancialAssets
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Miscellaneous non financial assets. + References No definition available. + Details
Name: | kep_MiscellaneousNonFinancialAssetsAbstract
Namespace Prefix: | kep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Others of miscellaneous non financial assets. + References No definition available. + Details
Name: | kep_OthersOfMiscellaneousNonFinancialAssets
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Prepaid expenses. + References No definition available. + Details
Name: | kep_PrepaidExpenses
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | kep_NonFinancialAssetsAxis=kep_OtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | kep_NonFinancialAssetsAxis=kep_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |