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v3.26.1

Additional Information of Statement of Cash Flows - Summary Of Material Non Cash Transactions Explanatory (Detail) - KRW (₩) ₩ in Millions |  | 12 Months Ended
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Feb. 19, 2026 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
TextBlock 1 [Abstract] |  |  |  |
Transfer of construction-in-progress to property, plant and equipment and intangible assets |  | ₩ 4,816,462 | ₩ 7,193,949 | ₩ 3,782,059
Changes in accounts payable related to acquisition of property, plant and equipment and intangible assets |  | 214,488 | (181,188) | (113,447)
Retirement of treasury shares | ₩ 635,100 | 374,546 | 431,107 |
Other material non-cash items |  | ₩ 5,405,496 | ₩ 7,443,868 | ₩ 3,668,612

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- Definition The increase (decrease) in property, plant and equipment including right-of-use assets resulting from transfers from construction in progress. [Refer: Property, plant and equipment including right-of-use assets; Construction in progress] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2025-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of material non-cash items other than depreciation and amortisation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2025-01-01 -Paragraph 28 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_28_e&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2025-01-01 -Paragraph 23 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_23_i&doctype=Standard -URIDate 2025-03-27 + Details
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