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v3.26.1

Additional Information of Statement of Cash Flows - Changes in Operating Assets and Liabilities (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Cash flows from (used in) operating activities [abstract] |  |  |
Trade accounts and notes receivable | ₩ (649,384) | ₩ 1,353,908 | ₩ (982,726)
Other receivables | (333,826) | (192,707) | 32,827
Inventories | 487,345 | 914,744 | 1,312,800
Other current assets | 148,797 | (124,125) | 265,296
Other non-current assets | 189,609 | (11,645) | (214,331)
Trade accounts and notes payable | (916,576) | (376,277) | (118,796)
Other payables | 181,355 | 56,936 | (301,561)
Other current liabilities | 389,040 | (1,020,242) | 15,213
Provisions | (69,218) | (213,235) | (318,955)
Usable and profitable donation assets | 0 | 101,557 | 0
Payments of severance benefits | (382,620) | (336,189) | (263,548)
Plan assets | 143,152 | 27,413 | (45,535)
Other non-current liabilities | 36,119 | 81,703 | (468,213)
Changes in operating assets and liabilities | ₩ (776,207) | ₩ 261,841 | ₩ (1,087,529)

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