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Held for sale - Additional Information (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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Disclosure Of Non Current Assets And Liabilities Classified As Held For Sale [Line Items] |  |
Non-current assets or disposal groups classified as held for sale | ₩ 71,212 | ₩ 29,583
Liabilities included in disposal groups classified as held for sale | 1,465 | ₩ 0
Amount recognised in other comprehensive income and accumulated in equity relating to non-current assets or disposal groups held for sale [member] |  |
Disclosure Of Non Current Assets And Liabilities Classified As Held For Sale [Line Items] |  |
Amount recognised in other comprehensive income and accumulated in equity relating to non-current assets or disposal groups held for sale | 2,798 |
Assets and liabilities classified as held for sale [member] |  |
Disclosure Of Non Current Assets And Liabilities Classified As Held For Sale [Line Items] |  |
Non-current assets or disposal groups classified as held for sale | 4,462 |
Liabilities included in disposal groups classified as held for sale | ₩ 1,465 |

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- Definition The amount recognised in other comprehensive income and accumulated in equity, relating to non-current assets or disposal groups held for sale. [Refer: Non-current assets or disposal groups classified as held for sale; Other reserves; Other comprehensive income; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 5 -IssueDate 2025-01-01 -Section Example 12 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&doctype=Implementation%20Guidance&dita_xref=IFRS05_ex12_TI -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2025-01-01 -Paragraph 38 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_38&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2025-01-01 -Paragraph 38 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_38&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph p -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_p&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of non-current assets or disposal groups classified as held for sale. [Refer: Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2025-01-01 -Paragraph 38 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2025-en-r&anchor=para_38&doctype=Standard -URIDate 2025-03-27 + Details
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