XML 185 R172.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Construction Contracts - Additional Information (Details) - Construction Contracts [Member] - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Accumulated Earned Revenue Expense And Others [Line Items]
Receivables from contracts with customers	₩ 101,180	₩ 85,757
Revenue that was included in contract liability balance at beginning of period	117,311
Revenue from performance obligations satisfied or partially satisfied in previous periods	₩ 9,367

X

- Definition

The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer that is unconditional. A right to consideration is unconditional if only the passage of time is required before payment of that consideration is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 105
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_105&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_a&doctype=Standard
-URIDate 2023-03-23

+ Details

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

X

- Definition

The amount of revenue from performance obligations satisfied (or partially satisfied) in previous periods. [Refer: Performance obligations [member]; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_RevenueFromPerformanceObligationsSatisfiedOrPartiallySatisfiedInPreviousPeriods
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of revenue that was included in the contract liability balance at the beginning of the period. [Refer: Contract liabilities; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Accumulated earned revenue expense and others.

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_TypesOfContractsAxis=kep_ConstructionContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: