XML 260 R248.htm IDEA: XBRL DOCUMENT
v3.22.1

Risk Management - Summary od Maturity Analysis for Non Derivative Financial Liabilities (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | ₩ 91,950,482 | ₩ 82,326,295
Finance lease liabilities |  | 4,928,988 | 5,209,537
Trade and other payables |  | 9,739,421 | 8,115,837
Financial guarantee contracts | [1] | 3,718,015 | 3,224,696
Non-derivative financial liabilities, undiscounted cash flows |  | 110,336,906 | 98,876,365
Financial guarantee liabilities |  | 80,841 | 66,354
Less than 1 year |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 15,833,589 | 12,413,346
Finance lease liabilities |  | 620,121 | 614,442
Trade and other payables |  | 7,569,869 | 5,679,856
Financial guarantee contracts | [1] | 435,729 | 926,244
Non-derivative financial liabilities, undiscounted cash flows |  | 24,459,308 | 19,633,888
1~2 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 11,229,657 | 10,919,041
Finance lease liabilities |  | 636,724 | 569,161
Trade and other payables |  | 777,017 | 373,907
Financial guarantee contracts | [1] | 0 | 348,860
Non-derivative financial liabilities, undiscounted cash flows |  | 12,643,398 | 12,210,969
2~5 Years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 28,663,693 | 24,778,020
Finance lease liabilities |  | 1,521,421 | 1,564,377
Trade and other payables |  | 725,231 | 894,903
Financial guarantee contracts | [1] | 3,105,599 | 26,230
Non-derivative financial liabilities, undiscounted cash flows |  | 34,015,944 | 27,263,530
More than 5 years |  |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |  |
Borrowings and debt securities |  | 36,223,543 | 34,215,888
Finance lease liabilities |  | 2,150,722 | 2,461,557
Trade and other payables |  | 667,304 | 1,167,171
Financial guarantee contracts | [1] | 176,687 | 1,923,362
Non-derivative financial liabilities, undiscounted cash flows |  | ₩ 39,218,256 | ₩ 39,767,978
[1] | This represents the total guarantee amounts associated with the financial guarantee contracts. Financial guarantee liabilities which are recognized as of December 31, 2020 and 2021 are ￦66,354 million and ￦80,841 million, respectively.

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 58 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_58&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph B11D -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_B11D_a&doctype=Appendix&subtype=B -URIDate 2021-03-24 + Details
Name: | ifrs-full_GrossLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of contractual undiscounted cash flows in relation to non-derivative financial liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 39 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_39_a&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_NonderivativeFinancialLiabilitiesUndiscountedCashFlows
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of contractual undiscounted cash flows in relation to trade and other payables. [Refer: Trade and other payables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph B11D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_B11D&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph IG31A -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_IG31A&doctype=Implementation%20Guidance -URIDate 2021-03-24 + Details
Name: | ifrs-full_TradeAndOtherPayablesUndiscountedCashFlows
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Bank borrowings and bonds issued undiscounted cash flows. + References No definition available. + Details
Name: | kep_BankBorrowingsAndBondsIssuedUndiscountedCashFlows
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Financial guarantee liabilities. + References No definition available. + Details
Name: | kep_FinancialGuaranteeLiabilities
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantee obligations maximum exposure. + References No definition available. + Details
Name: | kep_GuaranteeObligationsMaximumExposure
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |