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Income Taxes - Income Tax Credit (Charged) Directly to Equity (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Current and deferred tax relating to items charged or credited directly to equity [abstract] |  |  |
Net changes in fair value of equity investments at fair value through other comprehensive income | ₩ (129,758) | ₩ 41,999 | ₩ (71,600)
Remeasurements of defined benefit plans | 15,475 | 27,261 | 34,406
Others | 6,390 | (14,151) | 19,933
Income taxes credited (charged) directly to equity | ₩ (107,893) | ₩ 55,109 | ₩ (17,261)

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- Definition The aggregate current and deferred tax relating to particular items that are charged or credited directly to equity, for example: (a) an adjustment to the opening balance of retained earnings resulting from either a change in accounting policy that is applied retrospectively or the correction of an error; and (b) amounts arising on initial recognition of the equity component of a compound financial instrument. [Refer: Deferred tax relating to items credited (charged) directly to equity; Retained earnings; Classes of financial instruments [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2025-01-01 -Paragraph 81 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2025-en-r&anchor=para_81_a&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 194 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_a&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 194 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_194_a&doctype=Standard -URIDate 2025-03-27 + Details
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- References No definition available. + Details
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- Definition Current and deferred income tax expense relating to remeasurements of defined benefit plans directly charged credited to equity. + References No definition available. + Details
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- Definition Income tax relating to changes in fair value of equity investments through other comprehensive income charged to equity. + References No definition available. + Details
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- Definition Other tax relating to items credited (charged) directly to equity. + References No definition available. + Details
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