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Borrowings transactions between related parties (Details) - Korea Development Bank ₩ in Millions | 12 Months Ended
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Dec. 31, 2020 KRW (₩)
Facility |
Disclosure of Borrowings transactions between related parties [Line Items] |
Beginning balance | ₩ 59,845
Changes in Borrowings transactions between related parties [Abstract] |
Borrowings | 0
Repayment | (9,552)
Others | 0
Ending balance | 50,293
Others |
Disclosure of Borrowings transactions between related parties [Line Items] |
Beginning balance | 3,500
Changes in Borrowings transactions between related parties [Abstract] |
Borrowings | 0
Repayment | (554)
Others | 0
Ending balance | 2,946
Operating funds |
Disclosure of Borrowings transactions between related parties [Line Items] |
Beginning balance | 179,000
Changes in Borrowings transactions between related parties [Abstract] |
Borrowings | 152,961
Repayment | (187,511)
Others | (150)
Ending balance | 144,300
Syndicated Loan |
Disclosure of Borrowings transactions between related parties [Line Items] |
Beginning balance | 17,085
Changes in Borrowings transactions between related parties [Abstract] |
Borrowings | 0
Repayment | (1,063)
Others | (99)
Ending balance | 15,923
EBL |
Changes in Borrowings transactions between related parties [Abstract] |
Borrowings | 43,485
Repayment | 0
Others | (3,392)
Ending balance | ₩ 40,093

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- References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Period Type: | duration

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

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- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_FacilityLoan1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_OtherLoan1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |