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v3.21.1

Borrowings - Summary of Borrowings (Detail) ¥ in Thousands, ₩ in Millions | 12 Months Ended |  |
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Dec. 31, 2020 KRW (₩) | Dec. 31, 2020 SGD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 JPY (¥) | Dec. 31, 2019 KRW (₩) | Dec. 31, 2019 USD ($) | Dec. 31, 2019 JPY (¥)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jun. 5, 2025 |  |  |  |  |  |
Annual interest rates | 0.00% | 0.00% | 0.00% | 0.00% |  |  |
Less: Current portion | ₩ (1,418,114) |  |  |  | ₩ (1,185,725) |  |
Borrowings | 7,316,298 | $ 284,000,000 | $ 519,598,989 |  | 7,298,867 |  |
Gross carrying amount [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | ₩ 7,338,522 |  |  |  |  |  |
Gross carrying amount [member] | Sept. 07, 2034 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Sept. 7, 2034 |  |  |  |  |  |
Annual interest rates | 6.50% | 6.50% | 6.50% | 6.50% |  |  |
Annual interest rates description | LIBOR(3M)+0.900 |  |  |  |  |  |
Annual interest rates adjustment rate | 0.90% | 0.90% | 0.90% | 0.90% |  |  |
Gross carrying amount [member] | July 18, 2026 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | July 18, 2026 |  |  |  |  |  |
Annual interest rates | 2.50% | 2.50% | 2.50% | 2.50% |  |  |
Gross carrying amount [member] | Aug 07, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Aug. 7, 2022 |  |  |  |  |  |
Annual interest rates | 2.63% | 2.63% | 2.63% | 2.63% |  |  |
Gross carrying amount [member] | Aug. 20, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Aug. 20, 2023 |  |  |  |  |  |
Gross carrying amount [member] | Aug. 20, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Aug. 20, 2020 |  |  |  |  |  |
Gross carrying amount [member] | Nov 01, 2024 [memebr] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Nov. 1, 2024 |  |  |  |  |  |
Annual interest rates description | LIBOR(3M)+0.980 |  |  |  |  |  |
Annual interest rates adjustment rate | 0.98% | 0.98% | 0.98% | 0.98% |  |  |
Gross carrying amount [member] | June 19, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 19, 2023 |  |  |  |  |  |
Annual interest rates description | SOR(6M)+0.500 |  |  |  |  |  |
Annual interest rates adjustment rate | 0.50% | 0.50% | 0.50% | 0.50% |  |  |
Gross carrying amount [member] | Sept. 1, 2025 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Sept. 1, 2025 |  |  |  |  |  |
Annual interest rates | 1.00% | 1.00% | 1.00% | 1.00% |  |  |
Gross carrying amount [member] | July 06, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | July 6, 2020 |  |  |  |  |  |
Gross carrying amount [member] | July 06, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | July 6, 2021 |  |  |  |  |  |
Annual interest rates | 0.38% | 0.38% | 0.38% | 0.38% |  |  |
Gross carrying amount [member] | Nov 13, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Nov. 13, 2020 |  |  |  |  |  |
Gross carrying amount [member] | July 19, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | July 19, 2022 |  |  |  |  |  |
Annual interest rates | 0.22% | 0.22% | 0.22% | 0.22% |  |  |
Gross carrying amount [member] | July 19, 2024 [memeber] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | July 19, 2024 |  |  |  |  |  |
Annual interest rates | 0.33% | 0.33% | 0.33% | 0.33% |  |  |
Gross carrying amount [member] | Apr. 26, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Apr. 26, 2021 |  |  |  |  |  |
Annual interest rates | 4.71% | 4.71% | 4.71% | 4.71% |  |  |
Gross carrying amount [member] | Aug. 26, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Aug. 26, 2021 |  |  |  |  |  |
Annual interest rates | 4.09% | 4.09% | 4.09% | 4.09% |  |  |
Gross carrying amount [member] | Oct. 28, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Oct. 28, 2021 |  |  |  |  |  |
Annual interest rates | 4.31% | 4.31% | 4.31% | 4.31% |  |  |
Gross carrying amount [member] | Dec. 22, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Dec. 22, 2021 |  |  |  |  |  |
Annual interest rates | 4.09% | 4.09% | 4.09% | 4.09% |  |  |
Gross carrying amount [member] | Dec. 22, 2031 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Dec. 22, 2031 |  |  |  |  |  |
Annual interest rates | 4.27% | 4.27% | 4.27% | 4.27% |  |  |
Gross carrying amount [member] | Apr. 10, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Apr. 10, 2023 |  |  |  |  |  |
Annual interest rates | 2.95% | 2.95% | 2.95% | 2.95% |  |  |
Gross carrying amount [member] | Apr. 10, 2033 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Apr. 10, 2033 |  |  |  |  |  |
Annual interest rates | 3.17% | 3.17% | 3.17% | 3.17% |  |  |
Gross carrying amount [member] | Sept. 16, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Sept. 16, 2020 |  |  |  |  |  |
Gross carrying amount [member] | June 26, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 26, 2024 |  |  |  |  |  |
Annual interest rates | 3.42% | 3.42% | 3.42% | 3.42% |  |  |
Gross carrying amount [member] | June 26, 2034 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 26, 2024 |  |  |  |  |  |
Annual interest rates | 3.70% | 3.70% | 3.70% | 3.70% |  |  |
Gross carrying amount [member] | Sept. 02, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Sept. 2, 2024 |  |  |  |  |  |
Annual interest rates | 3.31% | 3.31% | 3.31% | 3.31% |  |  |
Gross carrying amount [member] | Sept. 02, 2034 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Sept. 2, 2034 |  |  |  |  |  |
Annual interest rates | 3.55% | 3.55% | 3.55% | 3.55% |  |  |
Gross carrying amount [member] | Jan. 29, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 29, 2020 |  |  |  |  |  |
Gross carrying amount [member] | Jan. 29, 2025 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 29, 2025 |  |  |  |  |  |
Annual interest rates | 2.45% | 2.45% | 2.45% | 2.45% |  |  |
Gross carrying amount [member] | Jan. 29, 2035 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 29, 2035 |  |  |  |  |  |
Annual interest rates | 2.71% | 2.71% | 2.71% | 2.71% |  |  |
Gross carrying amount [member] | Jan. 28, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 28, 2021 |  |  |  |  |  |
Annual interest rates | 1.95% | 1.95% | 1.95% | 1.95% |  |  |
Gross carrying amount [member] | Jan. 28, 2026 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 28, 2026 |  |  |  |  |  |
Annual interest rates | 2.20% | 2.20% | 2.20% | 2.20% |  |  |
Gross carrying amount [member] | Jan. 28, 2036 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 28, 2036 |  |  |  |  |  |
Annual interest rates | 2.35% | 2.35% | 2.35% | 2.35% |  |  |
Gross carrying amount [member] | Jan. 29, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 29, 2021 |  |  |  |  |  |
Annual interest rates | 2.55% | 2.55% | 2.55% | 2.55% |  |  |
Gross carrying amount [member] | Jan. 30, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 30, 2023 |  |  |  |  |  |
Annual interest rates | 2.75% | 2.75% | 2.75% | 2.75% |  |  |
Gross carrying amount [member] | Jan. 30, 2028 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 30, 2028 |  |  |  |  |  |
Annual interest rates | 2.95% | 2.95% | 2.95% | 2.95% |  |  |
Gross carrying amount [member] | Jan. 30, 2038 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 30, 2038 |  |  |  |  |  |
Annual interest rates | 2.93% | 2.93% | 2.93% | 2.93% |  |  |
Gross carrying amount [member] | Jan, 14, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 14, 2022 |  |  |  |  |  |
Annual interest rates | 2.05% | 2.05% | 2.05% | 2.05% |  |  |
Gross carrying amount [member] | Jan, 15, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 15, 2024 |  |  |  |  |  |
Annual interest rates | 2.09% | 2.09% | 2.09% | 2.09% |  |  |
Gross carrying amount [member] | Jan, 15, 2029 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 15, 2029 |  |  |  |  |  |
Annual interest rates | 2.16% | 2.16% | 2.16% | 2.16% |  |  |
Gross carrying amount [member] | Jan, 14, 2039 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Jan. 14, 2039 |  |  |  |  |  |
Annual interest rates | 2.21% | 2.21% | 2.21% | 2.21% |  |  |
Gross carrying amount [member] | Oct, 11, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Oct. 11, 2022 |  |  |  |  |  |
Annual interest rates | 1.55% | 1.55% | 1.55% | 1.55% |  |  |
Gross carrying amount [member] | Oct, 11, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Oct. 11, 2024 |  |  |  |  |  |
Annual interest rates | 1.58% | 1.58% | 1.58% | 1.58% |  |  |
Gross carrying amount [member] | Oct, 11, 2029 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Oct. 11, 2029 |  |  |  |  |  |
Annual interest rates | 1.62% | 1.62% | 1.62% | 1.62% |  |  |
Gross carrying amount [member] | Oct, 11, 2039 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | Oct. 11, 2039 |  |  |  |  |  |
Annual interest rates | 1.67% | 1.67% | 1.67% | 1.67% |  |  |
Gross carrying amount [member] | June 16, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 16, 2023 |  |  |  |  |  |
Annual interest rates | 1.17% | 1.17% | 1.17% | 1.17% |  |  |
Gross carrying amount [member] | June 17, 2025 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 17, 2025 |  |  |  |  |  |
Annual interest rates | 1.43% | 1.43% | 1.43% | 1.43% |  |  |
Gross carrying amount [member] | June 17, 2030 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 17, 2030 |  |  |  |  |  |
Annual interest rates | 1.61% | 1.61% | 1.61% | 1.61% |  |  |
Gross carrying amount [member] | June 15, 2040 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 15, 2040 |  |  |  |  |  |
Annual interest rates | 1.71% | 1.71% | 1.71% | 1.71% |  |  |
Gross carrying amount [member] | June 23, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Maturity | June 23, 2023 |  |  |  |  |  |
Annual interest rates | 1.51% | 1.51% | 1.51% | 1.51% |  |  |
Debentures [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Less: Current portion | ₩ (1,228,283) |  |  |  | (1,052,032) |  |
Discount on bonds | (19,847) |  |  |  | (20,780) |  |
Borrowings | 5,714,340 |  |  |  | 5,972,554 |  |
Debentures [member] | Gross carrying amount [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 6,962,470 |  |  |  | 7,045,366 |  |
Debentures [member] | Gross carrying amount [member] | Sept. 07, 2034 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 108,800 |  | $ 100,000,000 |  | 115,780 | $ 100,000,000 |
Debentures [member] | Gross carrying amount [member] | July 18, 2026 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 435,200 |  | 400,000,000 |  | 463,120 | 400,000,000 |
Debentures [member] | Gross carrying amount [member] | Aug 07, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 435,200 |  | 400,000,000 |  | 463,120 | 400,000,000 |
Debentures [member] | Gross carrying amount [member] | Aug. 20, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 108,800 |  | 100,000,000 |  | 115,780 | 100,000,000 |
Debentures [member] | Gross carrying amount [member] | Aug. 20, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  |  | 231,560 | 200,000,000 |
Debentures [member] | Gross carrying amount [member] | Nov 01, 2024 [memebr] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 380,800 |  | 350,000,000 |  | 405,230 | $ 350,000,000 |
Debentures [member] | Gross carrying amount [member] | June 19, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 233,510 | $ 284,000,000 |  |  |  |  |
Debentures [member] | Gross carrying amount [member] | Sept. 1, 2025 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 435,200 |  | $ 400,000,000 |  |  |  |
Debentures [member] | Gross carrying amount [member] | July 06, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  |  | 42,539 |  | ¥ 4,000,000
Debentures [member] | Gross carrying amount [member] | July 06, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 168,682 |  |  | ¥ 16,000,000 | 170,155 |  | 16,000,000
Debentures [member] | Gross carrying amount [member] | Nov 13, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  |  | 319,041 |  | 30,000,000
Debentures [member] | Gross carrying amount [member] | July 19, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 312,061 |  |  | 29,600,000 | 314,787 |  | 29,600,000
Debentures [member] | Gross carrying amount [member] | July 19, 2024 [memeber] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 4,217 |  |  | ¥ 400,000 | 4,254 |  | ¥ 400,000
Debentures [member] | Gross carrying amount [member] | Apr. 26, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 380,000 |  |  |  | 380,000 |  |
Debentures [member] | Gross carrying amount [member] | Aug. 26, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 250,000 |  |  |  | 250,000 |  |
Debentures [member] | Gross carrying amount [member] | Oct. 28, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 100,000 |  |  |  | 100,000 |  |
Debentures [member] | Gross carrying amount [member] | Dec. 22, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 90,000 |  |  |  | 90,000 |  |
Debentures [member] | Gross carrying amount [member] | Dec. 22, 2031 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 160,000 |  |  |  | 160,000 |  |
Debentures [member] | Gross carrying amount [member] | Apr. 10, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 190,000 |  |  |  | 190,000 |  |
Debentures [member] | Gross carrying amount [member] | Apr. 10, 2033 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 100,000 |  |  |  | 100,000 |  |
Debentures [member] | Gross carrying amount [member] | Sept. 16, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  |  | 300,000 |  |
Debentures [member] | Gross carrying amount [member] | June 26, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 110,000 |  |  |  | 110,000 |  |
Debentures [member] | Gross carrying amount [member] | June 26, 2034 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 100,000 |  |  |  | 100,000 |  |
Debentures [member] | Gross carrying amount [member] | Sept. 02, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 170,000 |  |  |  | 170,000 |  |
Debentures [member] | Gross carrying amount [member] | Sept. 02, 2034 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 100,000 |  |  |  | 100,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 29, 2020 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings |  |  |  |  | 160,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 29, 2025 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 240,000 |  |  |  | 240,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 29, 2035 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 50,000 |  |  |  | 50,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 28, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 130,000 |  |  |  | 130,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 28, 2026 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 100,000 |  |  |  | 100,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 28, 2036 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 70,000 |  |  |  | 70,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 29, 2021 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 110,000 |  |  |  | 110,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 30, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 150,000 |  |  |  | 150,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 30, 2028 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 170,000 |  |  |  | 170,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan. 30, 2038 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 70,000 |  |  |  | 70,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan, 14, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 220,000 |  |  |  | 220,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan, 15, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 80,000 |  |  |  | 80,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan, 15, 2029 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 110,000 |  |  |  | 110,000 |  |
Debentures [member] | Gross carrying amount [member] | Jan, 14, 2039 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 90,000 |  |  |  | 90,000 |  |
Debentures [member] | Gross carrying amount [member] | Oct, 11, 2022 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 340,000 |  |  |  | 340,000 |  |
Debentures [member] | Gross carrying amount [member] | Oct, 11, 2024 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 100,000 |  |  |  | 100,000 |  |
Debentures [member] | Gross carrying amount [member] | Oct, 11, 2029 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 50,000 |  |  |  | 50,000 |  |
Debentures [member] | Gross carrying amount [member] | Oct, 11, 2039 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 110,000 |  |  |  | ₩ 110,000 |  |
Debentures [member] | Gross carrying amount [member] | June 16, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 150,000 |  |  |  |  |  |
Debentures [member] | Gross carrying amount [member] | June 17, 2025 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 70,000 |  |  |  |  |  |
Debentures [member] | Gross carrying amount [member] | June 17, 2030 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 20,000 |  |  |  |  |  |
Debentures [member] | Gross carrying amount [member] | June 15, 2040 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | 60,000 |  |  |  |  |  |
Debentures [member] | Gross carrying amount [member] | June 23, 2023 [member] |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |
Borrowings | ₩ 100,000 |  |  |  |  |  |

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