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Borrowings and Debt Securities : Long-term borrowings (Details) ₨ in Thousands, ¥ in Thousands, Rp in Thousands, JD in Thousands, $ in Thousands, ₩ in Millions | 12 Months Ended |  |
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Dec. 31, 2019 KRW (₩) | Dec. 31, 2018 KRW (₩) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 JOD (JD) | Dec. 31, 2019 JPY (¥) | Dec. 31, 2019 PKR (₨) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 JOD (JD) | Dec. 31, 2018 JPY (¥) | Dec. 31, 2018 IDR (Rp) | Dec. 31, 2018 PKR (₨)
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Borrowings | ₩ 3,628,631 | ₩ 3,593,009 |  |  |  |  |  |  |  |  |
Less : Discount on long-term borrowings | (22,309) | (22,972) |  |  |  |  |  |  |  |  |
Less : Current portion of long-term borrowings | (217,579) | (312,994) |  |  |  |  |  |  |  |  |
Add : Current portion of discount on long-term borrowings | 1,000 | 972 |  |  |  |  |  |  |  |  |
Long-term borrowings | 3,389,743 | 3,258,015 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Borrowings | ₩ 2,283,166 | ₩ 1,914,531 |  |  |  |  |  |  |  |  |
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 | 2020~2044 | 2019~2044 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 3,500 | ₩ 4,154 |  |  |  |  |  |  |  |  |
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 | 2.45~4.60 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2023~2028 | 2023~2028 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 59,845 | ₩ 66,793 |  |  |  |  |  |  |  |  |
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 | 2.33~3.04 | 2.59~3.04 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2020~2022 | 2020~2021 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 55,000 | ₩ 67,000 |  |  |  |  |  |  |  |  |
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+0.95 | 1yr KoFC bond rate+0.95 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2020~2022 | 2020 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 24,000 | ₩ 14,000 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | KEB Hana Bank | KEB Hana Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Commercial Paper | Commercial Paper |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3M CD+0.13~0.32 | 3M CD+0.24~0.32 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2021~2024 | 2021~2022 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 1,150,000 | ₩ 950,000 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | KEB Hana Bank | KEB Hana Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | 4.60 | 4.60 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2028 | 2028 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 12,466 | ₩ 13,781 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | KEB Hana Bank | KEB Hana Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3yr KTB rate-1.25 | 3yr KTB rate-1.25 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2020~2028 | 2019~2028 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 6,699 | ₩ 8,072 |  |  |  |  |  |  |  |  |
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 | ₩ 10,497 | ₩ 22,500 |  |  |  |  |  |  |  |  |
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 | 1.5 | 1.5 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2026 | 2026 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 19,150 | ₩ 22,096 |  |  |  |  |  |  |  |  |
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 | 2.21 | 2.21 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2020 | 2020 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 35,000 | ₩ 35,000 |  |  |  |  |  |  |  |  |
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 resouces | Development of power resouces |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3yr KTB rate-2.25 | 3yr KTB rate-2.25 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2023~2025 | 2023~2025 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 4,350 | ₩ 5,558 |  |  |  |  |  |  |  |  |
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 | 2020~2024 | 2019~2024 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 2,058 | ₩ 2,589 |  |  |  |  |  |  |  |  |
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 | KTB rate-2.25 | KTB rate -2.25 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2024~2028 | 2024~2028 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 15,696 | ₩ 17,347 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor |  | Shinhan Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings |  | Collateral borrowing |  |  |  |  |  |  |  |  |
Borrowings interest rate |  | 2.32 |  |  |  |  |  |  |  |  |
Borrowings, maturity |  | 2019 |  |  |  |  |  |  |  |  |
Borrowings |  | ₩ 30,000 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank | Shinhan Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | CB rate+1.10 | CB rate+1.10 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2028 | 2028 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 18,698 | ₩ 20,672 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank | Shinhan Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3.95 | 3.95 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2035 | 2035 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 99,146 | ₩ 103,851 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Shinhan Bank | Shinhan Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |  |  |
Borrowings interest rate | Standard overdraft rate+1.00 | Standard overdraft rate +1.00 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2035 | 2035 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 99,146 | ₩ 103,851 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Kookmin Bank | Kookmin Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | MOR+0.79 | MOR+0.79 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2023 | 2023 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 23,333 | ₩ 30,333 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Kookmin Bank | Kookmin Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3.16 | 3.16 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2020 | 2020 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 10,000 | ₩ 10,000 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Other Creditors | Other Creditors |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | 1.75~6.80 | 1.75~4.60 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2026~2036 | 2026~2036 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 390,044 | ₩ 168,080 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Other Creditors | Other Creditors |  |  |  |  |  |  |  |  |
Purpose of borrowings | Facility | Facility |  |  |  |  |  |  |  |  |
Borrowings interest rate | CB rate+1.10~1.60 Standard overdraft rate+2.45 | CB rate+1.10~1.20 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2023~2036 | 2023~2036 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 111,834 | ₩ 52,810 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Other Creditors | Other Creditors |  |  |  |  |  |  |  |  |
Purpose of borrowings | PF Refinancing | PF Refinancing |  |  |  |  |  |  |  |  |
Borrowings interest rate | 4.1 | 4.1 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2030 | 2030 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 29,159 | ₩ 62,500 |  |  |  |  |  |  |  |  |
Local long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Other Creditors | Other Creditors |  |  |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |  |  |
Borrowings interest rate | 4.50~7.90 | 4.50~7.90 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2022~2039 | 2022~2039 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 102,348 | ₩ 102,347 |  |  |  |  |  |  |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Borrowings | ₩ 1,345,465 | ₩ 1,678,478 |  |  |  |  |  |  |  |  |
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 | 2021~2023 | 2021~2023 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 10,123 | ₩ 9,776 | $ 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 | ₩ 117,994 | ₩ 138,542 | 101,912 |  |  |  | 123,909 |  |  |  |
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 | ₩ 239,039 | ₩ 249,783 |  | JD 146,380 |  |  |  | JD 158,524 |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor |  | Export-Import Bank of Korea and others |  |  |  |  |  |  |  |  |
Purpose of borrowings |  | Commercial loan and others |  |  |  |  |  |  |  |  |
Borrowings interest rate |  | 3M Libor+1.50~2.50 |  |  |  |  |  |  |  |  |
Borrowings, maturity |  | 2030~2033 |  |  |  |  |  |  |  |  |
Borrowings |  | ₩ 310,315 |  |  |  |  | 277,538 |  |  |  |
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+2.50~2.70 | 6M Libor+1.70~2.50 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2032 | 2032 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 137,412 | ₩ 141,773 | 118,684 |  |  |  | 126,798 |  |  |  |
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 | Others | Others |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3.88 | 3.88 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2021 | 2021 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 334,685 | ₩ 310,427 | 289,709 |  |  |  | 278,105 |  |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | SCNT and others | SCNT and others |  |  |  |  |  |  |  |  |
Purpose of borrowings | Shareholder's loan | Shareholder's loan |  |  |  |  |  |  |  |  |
Borrowings interest rate | 6.50~8.00 | 6.50~8.00 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2023 | 2023 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 15,051 | ₩ 49,956 | 13,000 |  |  |  | 44,680 |  |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | SCNT and others | SCNT and others |  |  |  |  |  |  |  |  |
Purpose of borrowings | Shareholder's loan | Shareholder's loan |  |  |  |  |  |  |  |  |
Borrowings interest rate | 8 | 8 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2031 | 2031 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 7,925 | ₩ 7,647 |  | JD 4,853 |  |  |  | JD 4,853 |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor |  | PT PJB |  |  |  |  |  |  |  |  |
Purpose of borrowings |  | Shareholder's loan |  |  |  |  |  |  |  |  |
Borrowings interest rate |  | 12.75 |  |  |  |  |  |  |  |  |
Borrowings, maturity |  | 2019 |  |  |  |  |  |  |  |  |
Borrowings |  | ₩ 428 |  |  |  |  |  |  |  | Rp 5,569,304 |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Samsung Life Insurance and others | Samsung Life Insurance and others |  |  |  |  |  |  |  |  |
Purpose of borrowings | Syndicated loan | Syndicated loan |  |  |  |  |  |  |  |  |
Borrowings interest rate | 3.10 | 3.10 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2032 | 2032 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 52,972 | ₩ 53,565 |  |  | ¥ 4,981,038 |  |  |  | ¥ 5,286,835 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Woori Bank and others | Woori Bank and others |  |  |  |  |  |  |  |  |
Purpose of borrowings | Syndicated loan | Syndicated loan |  |  |  |  |  |  |  |  |
Borrowings interest rate | JPY 6M Libor+2.00 | JPY 6M Libor +2.00 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2032 | 2032 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 34,171 | ₩ 34,553 |  |  | ¥ 3,213,121 |  |  |  | ¥ 3,410,381 |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor |  | SMBC and others |  |  |  |  |  |  |  |  |
Purpose of borrowings |  | Equity Bridge Loan |  |  |  |  |  |  |  |  |
Borrowings interest rate |  | 1M Libor+0.90 |  |  |  |  |  |  |  |  |
Borrowings, maturity |  | 2019 |  |  |  |  |  |  |  |  |
Borrowings |  | ₩ 49,218 |  |  |  |  | 44,019 |  |  |  |
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 | ₩ 278,652 | ₩ 206,944 |  |  |  | ₨ 37,252,930 |  |  |  |  | ₨ 25,900,420
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Federal Financing Bank | Federal Financing Bank |  |  |  |  |  |  |  |  |
Purpose of borrowings | PF loan | PF loan |  |  |  |  |  |  |  |  |
Borrowings interest rate | 2.39~13 | 2.39~13 |  |  |  |  |  |  |  |  |
Borrowings, maturity | 2031~2038 | 2031~2038 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 117,377 | ₩ 114,406 | 101,380 |  |  |  | 102,322 |  |  |  |
Foreign long-term borrowings |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about Long-term borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |
Name of Creditor | Other Creditors | Other Creditors |  |  |  |  |  |  |  |  |
Purpose of borrowings | Others | Others |  |  |  |  |  |  |  |  |
Borrowings interest rate | - | - |  |  |  |  |  |  |  |  |
Borrowings, maturity | - | 2019 |  |  |  |  |  |  |  |  |
Borrowings | ₩ 64 | ₩ 1,145 | $ 57 |  |  |  | $ 1,025 |  |  |  |

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