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v3.23.1

Borrowings - Summary of Repayment of Debentures and Borrowings Including the Current Liabilities (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of detailed information about borrowings [line items] |  |
Borrowings | ₩ 10,006,685 | ₩ 8,437,703
Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,083,705 | ₩ 552,995
Gross carrying amount [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 10,033,053 |
Gross carrying amount [member] | Bonds [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 8,444,351 |
Gross carrying amount [member] | Bonds [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 5,448,000 |
Gross carrying amount [member] | Bonds [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 2,996,351 |
Gross carrying amount [member] | Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,588,702 |
Gross carrying amount [member] | Long-term borrowings [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,428,769 |
Gross carrying amount [member] | Long-term borrowings [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 159,933 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,827,513 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] | Bonds [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,154,573 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] | Bonds [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 760,000 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] | Bonds [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 394,573 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] | Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 672,940 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] | Long-term borrowings [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 590,040 |
Gross carrying amount [member] | Jan 1, 2023 - Dec 31, 2023 [member] | Long-term borrowings [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 82,900 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 2,334,954 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] | Bonds [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,827,368 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] | Bonds [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,380,000 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] | Bonds [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 447,368 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] | Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 507,586 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] | Long-term borrowings [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 455,899 |
Gross carrying amount [member] | Jan 1, 2024 - Dec 31, 2024 [member] | Long-term borrowings [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 51,687 |
Gross carrying amount [member] | Jan 1, 2025 - Dec 31, 2025 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 2,461,002 |
Gross carrying amount [member] | Jan 1, 2025 - Dec 31, 2025 [member] | Bonds [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 2,278,570 |
Gross carrying amount [member] | Jan 1, 2025 - Dec 31, 2025 [member] | Bonds [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,138,000 |
Gross carrying amount [member] | Jan 1, 2025 - Dec 31, 2025 [member] | Bonds [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,140,570 |
Gross carrying amount [member] | Jan 1, 2025 - Dec 31, 2025 [member] | Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 182,432 |
Gross carrying amount [member] | Jan 1, 2025 - Dec 31, 2025 [member] | Long-term borrowings [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 182,432 |
Gross carrying amount [member] | Jan 1, 2026 - Dec 31, 2026 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,038,737 |
Gross carrying amount [member] | Jan 1, 2026 - Dec 31, 2026 [member] | Bonds [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 926,920 |
Gross carrying amount [member] | Jan 1, 2026 - Dec 31, 2026 [member] | Bonds [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 420,000 |
Gross carrying amount [member] | Jan 1, 2026 - Dec 31, 2026 [member] | Bonds [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 506,920 |
Gross carrying amount [member] | Jan 1, 2026 - Dec 31, 2026 [member] | Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 111,817 |
Gross carrying amount [member] | Jan 1, 2026 - Dec 31, 2026 [member] | Long-term borrowings [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 111,817 |
Gross carrying amount [member] | After 2027 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 2,370,847 |
Gross carrying amount [member] | After 2027 [member] | Bonds [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 2,256,920 |
Gross carrying amount [member] | After 2027 [member] | Bonds [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,750,000 |
Gross carrying amount [member] | After 2027 [member] | Bonds [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 506,920 |
Gross carrying amount [member] | After 2027 [member] | Long-term borrowings [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 113,927 |
Gross carrying amount [member] | After 2027 [member] | Long-term borrowings [member] | In local currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 88,581 |
Gross carrying amount [member] | After 2027 [member] | Long-term borrowings [member] | In foreign currency [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | ₩ 25,346 |

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