XML 193 R178.htm IDEA: XBRL DOCUMENT
v3.19.1

Changes in finance lease liabilities (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure - Changes in finance lease liabilities [Abstract] |  |
Beginning balance of Finance Lease Liabilities | ₩ 418,260 | ₩ 541,179
Cash flow | (134,454) | (122,919)
Acquisition of finance lease assets | 0 | 0
Ending balance of Finance Lease Liabilities | ₩ 283,806 | ₩ 418,260

X
- Definition The amount of liabilities related to finance leases. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2019-01-01 -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-02&anchor=para_55&doctype=Standard&book=b -URIDate 2018-03-16 + Details
Name: | ifrs-full_FinanceLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

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