XML 168 R152.htm IDEA: XBRL DOCUMENT
v3.21.1

Construction Contracts (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Construction Services Contracts [Abstract] |  |  |
Beginning balance | ₩ 2,735,141 | ₩ 3,620,788 | ₩ 4,176,595
Increase and decrease |  |  |
new orders and foreign exchange impact | 1,512,460 | 390,224 | 1,207,097
Changes in scope of construction work | (282,701) | (10,955) | (20,513)
Increase (decrease) in Construction contracts from new orders and foreign exchange | 1,229,759 | 379,269 | 1,186,584
Recognized as revenue | (812,175) | (1,264,916) | (1,742,391)
Ending balance | ₩ 3,152,725 | ₩ 2,735,141 | ₩ 3,620,788

X
- Definition The amount of revenue arising from construction contracts. Construction contracts are contracts specifically negotiated for the construction of an asset or a combination of assets that are closely interrelated or interdependent in terms of their design, technology and function or their ultimate purpose or use. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RevenueFromConstructionContracts
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- References No definition available. + Details
Name: | kep_ChangeInConstructionContractsAmountsDecrease
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ChangeInConstructionContractsAmountsIncrease
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | kep_ChangeInConstructionContractsAmountsIncreaseDecrease
Namespace Prefix: | kep_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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