XML 271 R256.htm IDEA: XBRL DOCUMENT v3.23.1

Risk Management - Summary of Fair Value Measurement of Assets (Details) - KRW (₩) ₩ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through other comprehensive income	₩ 502,829	₩ 435,107	₩ 358,559
Derivative assets	1,048,713	661,447
Financial assets at fair value through profit or loss	3,709,508	1,032,864
At fair value
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through other comprehensive income	502,829	435,107
Derivative assets	1,018,024	647,783
Financial assets at fair value through profit or loss	3,709,508	1,032,864
Total	5,230,361	2,115,754
At fair value | Level 1
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through other comprehensive income	300,057	273,826
Derivative assets	0	0
Financial assets at fair value through profit or loss	0	0
Total	300,057	273,826
At fair value | Level 2
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through other comprehensive income	0	0
Derivative assets	1,018,024	647,783
Financial assets at fair value through profit or loss	3,703,179	1,027,067
Total	4,721,203	1,674,850
At fair value | Level 3
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through other comprehensive income	202,772	161,281
Derivative assets	0	0
Financial assets at fair value through profit or loss	6,329	5,797
Total	₩ 209,101	₩ 167,078

X

- Definition

The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_DerivativeFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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_DisclosureOfFairValueMeasurementOfAssetsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of financial assets at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 8
-Subparagraph h
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_8_h&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_FinancialAssetsAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 8
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_8_a&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Fair value measurement of assets.

+ References

No definition available.

+ Details

Name:	kep_FairValueMeasurementOfAssets
Namespace Prefix:	kep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	ifrs-full_MeasurementAxis=ifrs-full_AtFairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level1OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level2OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: