XML 192 R180.htm IDEA: XBRL DOCUMENT
v3.22.1

Borrowings and Debt Securities - Long-term Borrowings (Details) € in Thousands, ¥ in Thousands, JD in Thousands, $ in Thousands, ₩ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 KRW (₩) | Dec. 31, 2020 KRW (₩) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 JOD (JD) | Dec. 31, 2021 JPY (¥) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 JOD (JD) | Dec. 31, 2020 JPY (¥)
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | ₩ 3,742,184 | ₩ 3,696,880 |  |  |  |  |  |  |
Less : Discount on long-term borrowings | (14,905) | (16,622) |  |  |  |  |  |  |
Less : Current portion of long-term borrowings | (1,463,703) | (677,982) |  |  |  |  |  |  |
Add : Current portion of discount on long-term borrowings | 2,048 | 1,723 |  |  |  |  |  |  |
Long-term borrowings | 2,265,624 | 3,003,999 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | ₩ 2,720,355 | ₩ 2,485,062 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Development Bank | Korea Development Bank |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |
Borrowings interest rate | 0.50 | 0.50 |  |  |  |  |  |  |
Borrowings, maturity | 2023~2044 | 2021~2044 |  |  |  |  |  |  |
Borrowings | ₩ 2,509 | ₩ 2,946 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Development Bank | Korea Development Bank |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | 2.50~4.60 | 2.50~4.60 |  |  |  |  |  |  |
Borrowings, maturity | 2022~2028 | 2021~2028 |  |  |  |  |  |  |
Borrowings | ₩ 39,430 | ₩ 50,293 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Development Bank | Korea Development Bank |  |  |  |  |  |  |
Purpose of borrowings | Operating funds | Operating funds |  |  |  |  |  |  |
Borrowings interest rate | 2.33 | 2.33 |  |  |  |  |  |  |
Borrowings, maturity | 2022 | 2022 |  |  |  |  |  |  |
Borrowings | ₩ 20,000 | ₩ 20,000 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Development Bank | Korea Development Bank |  |  |  |  |  |  |
Purpose of borrowings | Operating funds | Operating funds |  |  |  |  |  |  |
Borrowings interest rate | 1yr KoFC bond rate +0.81~0.95 | 1yr KoFC bond rate +0.81~0.95 |  |  |  |  |  |  |
Borrowings, maturity | 2022~2023 | 2022~2023 |  |  |  |  |  |  |
Borrowings | ₩ 64,300 | ₩ 24,300 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Hana Bank | Hana Bank |  |  |  |  |  |  |
Purpose of borrowings | Commercial Paper | Commercial Paper |  |  |  |  |  |  |
Borrowings interest rate | 3M CD+0.13~0.43 | 3M CD+0.13~0.32 |  |  |  |  |  |  |
Borrowings, maturity | 2022~2025 | 2021~2024 |  |  |  |  |  |  |
Borrowings | ₩ 1,050,000 | ₩ 1,150,000 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Hana Bank | Hana Bank |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | 4.60 | 4.60 |  |  |  |  |  |  |
Borrowings, maturity | 2028 | 2028 |  |  |  |  |  |  |
Borrowings | ₩ 9,647 | ₩ 11,088 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Hana Bank | Hana Bank |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | 3yr KTB rate-1.25 | 3yr KTB rate-1.25 Standard overdraft rate+1.50~2.45 |  |  |  |  |  |  |
Borrowings, maturity | 2022~2028 | 2021~2035 |  |  |  |  |  |  |
Borrowings | ₩ 4,485 | ₩ 43,419 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | IBK | IBK |  |  |  |  |  |  |
Purpose of borrowings | PF Refinancing | PF Refinancing |  |  |  |  |  |  |
Borrowings interest rate | CD+1.25 | CD+1.25 |  |  |  |  |  |  |
Borrowings, maturity | 2030 | 2030 |  |  |  |  |  |  |
Borrowings | ₩ 8,589 | ₩ 9,543 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Export-Import Bank of Korea | Export-Import Bank of Korea |  |  |  |  |  |  |
Purpose of borrowings | Project loans | Project loans |  |  |  |  |  |  |
Borrowings interest rate | 1.50 | 1.50 |  |  |  |  |  |  |
Borrowings, maturity | 2026 | 2026 |  |  |  |  |  |  |
Borrowings | ₩ 13,258 | ₩ 16,204 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Export-Import Bank of Korea | Export-Import Bank of Korea |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | 1.32 | 1.32 |  |  |  |  |  |  |
Borrowings, maturity | 2028 | 2028 |  |  |  |  |  |  |
Borrowings | ₩ 32,000 | ₩ 32,000 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Export-Import Bank of Korea | Export-Import Bank of Korea |  |  |  |  |  |  |
Purpose of borrowings | Operating funds | Operating funds |  |  |  |  |  |  |
Borrowings interest rate | 1.78 | 1.78 |  |  |  |  |  |  |
Borrowings, maturity | 2023 | 2023 |  |  |  |  |  |  |
Borrowings | ₩ 15,700 | ₩ 15,700 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Energy Agency | Korea Energy Agency |  |  |  |  |  |  |
Purpose of borrowings | Development of power resources | Development of power resources |  |  |  |  |  |  |
Borrowings interest rate | 3yr KTB rate-2.25 | 3yr KTB rate-2.25 |  |  |  |  |  |  |
Borrowings, maturity | 2023~2025 | 2023~2025 |  |  |  |  |  |  |
Borrowings | ₩ 8,971 | ₩ 2,509 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Energy Agency | Korea Energy Agency |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | 3yr KTB rate-2.25 | 3yr KTB rate-2.25 |  |  |  |  |  |  |
Borrowings, maturity | 2022~2024 | 2021~2024 |  |  |  |  |  |  |
Borrowings | ₩ 995 | ₩ 1,527 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Energy Agency | Korea Energy Agency |  |  |  |  |  |  |
Purpose of borrowings | Project loans | Project loans |  |  |  |  |  |  |
Borrowings interest rate | — | — |  |  |  |  |  |  |
Borrowings, maturity | 2023 | 2023 |  |  |  |  |  |  |
Borrowings | ₩ 1,197 | ₩ 1,197 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Energy Agency | Korea Energy Agency |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |
Borrowings interest rate | 1.75 | KTB rate-2.25 |  |  |  |  |  |  |
Borrowings, maturity | 2028 | 2024~2028 |  |  |  |  |  |  |
Borrowings | ₩ 4,893 | ₩ 14,045 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank and others | Shinhan Bank |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | CB rate+1.10 | CB rate+1.10 |  |  |  |  |  |  |
Borrowings, maturity | 2028 | 2028 |  |  |  |  |  |  |
Borrowings | ₩ 14,470 | ₩ 16,632 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank and others | Shinhan Bank |  |  |  |  |  |  |
Purpose of borrowings | Commercial paper | Others |  |  |  |  |  |  |
Borrowings interest rate | 3M CD+0.38 | 3.95 |  |  |  |  |  |  |
Borrowings, maturity | 2025 | 2034 |  |  |  |  |  |  |
Borrowings | ₩ 150,000 | ₩ 89,257 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank and others | Shinhan Bank |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |
Borrowings interest rate | 3.95 | Standard overdraft rate+1.00 |  |  |  |  |  |  |
Borrowings, maturity | 2034 | 2034 |  |  |  |  |  |  |
Borrowings | ₩ 84,179 | ₩ 89,257 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank and others | Kookmin Bank |  |  |  |  |  |  |
Purpose of borrowings | Others | Facility |  |  |  |  |  |  |
Borrowings interest rate | Standard overdraft rate+1.00 | MOR+0.79 3M CD+1.79 |  |  |  |  |  |  |
Borrowings, maturity | 2034 | 2021~2031 |  |  |  |  |  |  |
Borrowings | ₩ 84,179 | ₩ 46,512 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Kookmin Bank | Others |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | MOR+0.79 3M CD+1.79 | 1.75~6.80 |  |  |  |  |  |  |
Borrowings, maturity | 2022~2031 | 2026~2037 |  |  |  |  |  |  |
Borrowings | ₩ 59,333 | ₩ 510,262 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others | Others |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |
Borrowings interest rate | 2.80~6.80 | CB rate+1.10~1.20 3M CD+1.60 Standard overdraft rate+1.50~2.45 |  |  |  |  |  |  |
Borrowings, maturity | 2024~2039 | 2023~2037 |  |  |  |  |  |  |
Borrowings | ₩ 620,185 | ₩ 89,506 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others | Others |  |  |  |  |  |  |
Purpose of borrowings | Facility | PF Refinancing |  |  |  |  |  |  |
Borrowings interest rate | CB rate+0.90~1.10 3M CD+1.60 3.37 | 4.10 |  |  |  |  |  |  |
Borrowings, maturity | 2028~2037 | 2030 |  |  |  |  |  |  |
Borrowings | ₩ 171,733 | ₩ 26,509 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others | Others |  |  |  |  |  |  |
Purpose of borrowings | PF Refinancing | Others |  |  |  |  |  |  |
Borrowings interest rate | 3.80~5.00 | 3.90~7.90 |  |  |  |  |  |  |
Borrowings, maturity | 2030~2034 | 2023~2039 |  |  |  |  |  |  |
Borrowings | ₩ 71,742 | ₩ 222,356 |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others |  |  |  |  |  |  |  |
Purpose of borrowings | PF Refinancing |  |  |  |  |  |  |  |
Borrowings interest rate | 1.75 |  |  |  |  |  |  |  |
Borrowings, maturity | 2029 |  |  |  |  |  |  |  |
Borrowings | ₩ 22,265 |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others |  |  |  |  |  |  |  |
Purpose of borrowings | Others |  |  |  |  |  |  |  |
Borrowings interest rate | 4.40~7.90 |  |  |  |  |  |  |  |
Borrowings, maturity | 2022~2038 |  |  |  |  |  |  |  |
Borrowings | ₩ 116,367 |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others |  |  |  |  |  |  |  |
Purpose of borrowings | Others |  |  |  |  |  |  |  |
Borrowings interest rate | 1.80~4.50 |  |  |  |  |  |  |  |
Borrowings, maturity | 2031~2034 |  |  |  |  |  |  |  |
Borrowings | ₩ 49,928 |  |  |  |  |  |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Borrowings | ₩ 1,021,829 | ₩ 1,211,818 |  |  |  |  |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Korea Energy Agency | Korea Energy Agency |  |  |  |  |  |  |
Purpose of borrowings | Project loans | Project loans |  |  |  |  |  |  |
Borrowings interest rate | — | — |  |  |  |  |  |  |
Borrowings, maturity | 2026 | 2021~2023 |  |  |  |  |  |  |
Borrowings | ₩ 10,366 | ₩ 9,513 | $ 8,744 |  |  |  | $ 8,744 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Export-Import Bank of Korea and others | Export-Import Bank of Korea and others |  |  |  |  |  |  |
Purpose of borrowings | Direct loan and others | Direct loan and others |  |  |  |  |  |  |
Borrowings interest rate | 1M Libor+1.80~3.20 | 1M Libor+1.80~3.20 |  |  |  |  |  |  |
Borrowings, maturity | 2036 | 2036 |  |  |  |  |  |  |
Borrowings | ₩ 106,485 | ₩ 104,463 | 89,823 |  |  |  | 96,014 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Export-Import Bank of Korea and others | Export-Import Bank of Korea and others |  |  |  |  |  |  |
Purpose of borrowings | Direct loan and others | Direct loan and others |  |  |  |  |  |  |
Borrowings interest rate | 3M Libor+2.75~3.70 | 3M LIBOR+2.75~3.70 |  |  |  |  |  |  |
Borrowings, maturity | 2027 | 2027 |  |  |  |  |  |  |
Borrowings | ₩ 180,363 | ₩ 202,912 |  | JD 107,868 |  |  |  | JD 132,228 |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Export-Import Bank of Korea and others | Export-Import Bank of Korea and others |  |  |  |  |  |  |
Purpose of borrowings | PF Loan | PF Loan |  |  |  |  |  |  |
Borrowings interest rate | 6M Libor+1.70~2.50 | 6M LIBOR+1.70~2.50 |  |  |  |  |  |  |
Borrowings, maturity | 2032 | 2032 |  |  |  |  |  |  |
Borrowings | ₩ 122,509 | ₩ 121,013 | 103,340 |  |  |  | 111,225 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | POSCO and others | Export-Import Bank of Korea and others |  |  |  |  |  |  |
Purpose of borrowings | Shareholder’s loan | Others |  |  |  |  |  |  |
Borrowings interest rate | 8.00 | 3.88 |  |  |  |  |  |  |
Borrowings, maturity | 2025 | 2021 |  |  |  |  |  |  |
Borrowings | ₩ 14,171 | ₩ 314,986 | 11,953 |  |  |  | 289,509 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | POSCO and others | POSCO and others |  |  |  |  |  |  |
Purpose of borrowings | Shareholder’s loan | Shareholder’s loan |  |  |  |  |  |  |
Borrowings interest rate | 8.00 | 8.00 |  |  |  |  |  |  |
Borrowings, maturity | 2031 | 2023 |  |  |  |  |  |  |
Borrowings | ₩ 8,114 | ₩ 15,298 |  | JD 4,853 |  |  | 14,061 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Samsung Life Insurance and other | POSCO and others |  |  |  |  |  |  |
Purpose of borrowings | Syndicated Loans | Shareholder’s loan |  |  |  |  |  |  |
Borrowings interest rate | 3.10~8.00 | 8.00 |  |  |  |  |  |  |
Borrowings, maturity | 2032 | 2031 |  |  |  |  |  |  |
Borrowings | ₩ 53,000 | ₩ 7,447 |  |  | ¥ 5,144,387 |  |  | JD 4,853 |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Woori Bank and others | Samsung Life Insurance and others |  |  |  |  |  |  |
Purpose of borrowings | Syndicated Loans | Syndicated Loans |  |  |  |  |  |  |
Borrowings interest rate | JPY 6M Libor+2.00 | 3.10 |  |  |  |  |  |  |
Borrowings, maturity | 2032 | 2032 |  |  |  |  |  |  |
Borrowings | ₩ 29,060 | ₩ 49,369 |  |  | ¥ 2,820,708 |  |  |  | ¥ 4,682,816
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | KiwoomSolar Power Professional Investor Private Placement Investment Trust V | Woori Bank and others |  |  |  |  |  |  |
Purpose of borrowings | Senior borrowing | Syndicated Loans |  |  |  |  |  |  |
Borrowings interest rate | 3.90 | JPY 6M Libor+2.00 |  |  |  |  |  |  |
Borrowings, maturity | 2029 | 2032 |  |  |  |  |  |  |
Borrowings | ₩ 48,741 | ₩ 31,847 |  |  |  | € 36,311 |  |  | ¥ 3,020,746
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | IFC and others | IFC and others |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |
Borrowings interest rate | 6M Libor+5.00 | 6M Libor+5.00 |  |  |  |  |  |  |
Borrowings, maturity | 2031 | 2031 |  |  |  |  |  |  |
Borrowings | ₩ 272,686 | ₩ 243,837 | 230,018 |  |  |  | 224,115 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Federal Financing Bank and others | Federal Financing Bank and others |  |  |  |  |  |  |
Purpose of borrowings | PF Loans | PF Loans |  |  |  |  |  |  |
Borrowings interest rate | 2.39~6.00 | 2.39~6.00 |  |  |  |  |  |  |
Borrowings, maturity | 2031~2038 | 2031~2038 |  |  |  |  |  |  |
Borrowings | ₩ 111,597 | ₩ 105,913 | 94,135 |  |  |  | 97,347 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |
Name of Creditor | Others | Others |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |
Borrowings interest rate | — | — |  |  |  |  |  |  |
Borrowings, maturity | — | — |  |  |  |  |  |  |
Borrowings | ₩ 64,737 | ₩ 5,220 | $ 54,607 |  |  |  | $ 4,798 |  |

X
- Definition The maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_7&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_BorrowingsMaturity
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_LongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

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

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

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

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

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

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

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

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings6Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings7Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings8Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings9Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings10Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings11Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings12Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings13Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings14Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings15Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings16Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings17Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings18Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings19Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings20Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings21Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings22Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings23Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings24Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings25Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_LocalLongTermBorrowings26Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings6Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings7Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings8Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings9Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings10Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings11Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=kep_ForeignLongTermBorrowings12Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |