XML 144 R131.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Financial Assets at Fair Value Through Other Comprehensive Income - Summary of Changes in Financial Assets at Fair Value Through Other Comprehensive Income (Details) - KRW (₩) ₩ in Millions		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		₩ 502,829		₩ 435,107
Acquisition		14,060		9,451
Disposal		(5,332)		0
Valuation		(9,970)		61,860
Others		856		(3,589)
Ending Balance		502,443		502,829
Listed equity securities
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		300,057		273,826
Acquisition		430		0
Disposal		0		0
Valuation		(15,433)		28,585
Others		0		(2,354)
Ending Balance		285,054		300,057
Unlisted equity securities
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		202,243	[1]	160,790
Acquisition		9,550		9,451
Disposal		(5,332)		0
Valuation		5,445		33,237
Others		856		(1,235)
Ending Balance	[1]	212,762		202,243
Corporate bond
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		529		491
Acquisition		4,080		0
Disposal		0		0
Valuation		18		38
Others		0		0
Ending Balance		4,627		529
Listed and unlisted equity securties
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		502,300		434,616
Acquisition		9,980		9,451
Disposal		(5,332)		0
Valuation		(9,988)		61,822
Others		856		(3,589)
Ending Balance		497,816		502,300
Current Financial assets at fair value through other comprehensive income category
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		0		0
Acquisition		0		0
Disposal		0		0
Valuation		0		0
Others		0		0
Ending Balance		0		0
Non-Current Financial assets at fair value through other comprehensive income category
Changes in financial assets at fair value through other comprehensive income [Line Items]
Beginning balance		502,829		435,107
Acquisition		14,060		9,451
Disposal		(5,332)		0
Valuation		(9,970)		61,860
Others		856		(3,589)
Ending Balance		₩ 502,443		₩ 502,829
[1] The Company used initial cost as their fair value because there was not enough information to determine fair value, and the range of the estimated fair value is wide.

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 2023-01-01
-Paragraph 8
-Subparagraph h
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_8_h&doctype=Standard
-URIDate 2023-03-23

+ Details

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

X

- Definition

Acquisitions financial assets at fair value through other comprehensive income.

+ References

No definition available.

+ Details

Name:	kep_AcquisitionsFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix:	kep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	kep_ChangesInFinancialAssetsAtFairValueThroughOtherComprehensiveIncomeLineItems
Namespace Prefix:	kep_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Disposals financial assets at fair value through other comprehensive income.

+ References

No definition available.

+ Details

Name:	kep_DisposalsFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix:	kep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Other increase decrease in financial assets at fair value through other comprehensive income.

+ References

No definition available.

+ Details

Name:	kep_OtherIncreaseDecreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix:	kep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Valuation financial assets at fair value through other comprehensive income.

+ References

No definition available.

+ Details

Name:	kep_ValuationFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
Namespace Prefix:	kep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=kep_ListedEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=kep_UnlistedEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=kep_CorporateBondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=kep_ListedAndUnlistedEquitySecurtiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=kep_CurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=kep_NonCurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: