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Financial Instruments - Changes in Interest Expense Due to an Increases or Decreases in Interest Rate (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
1% increase in floating rates [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Hypothetical percentage change in the floating rate | 1.00% | 1.00%
1% increase in floating rates [member] | Variable rate [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Change in interest expense due to hypothetical increase or decrease in the floating rate | ₩ (62,130) | ₩ (46,900)
1% decrease in floating rates [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Hypothetical percentage change in the floating rate | 1.00% | 1.00%
1% decrease in floating rates [member] | Variable rate [member] |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Change in interest expense due to hypothetical increase or decrease in the floating rate | ₩ 62,130 | ₩ 46,900

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- Definition The increase (decrease) in exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Exposure to credit risk on loan commitments and financial guarantee contracts] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 70 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70&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 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 35H -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35H&doctype=Standard -URIDate 2025-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 35I -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_35I&doctype=Standard -URIDate 2025-03-27 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 66 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_66&doctype=Standard -URIDate 2025-03-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 70 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_70&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Risk exposure associated with instruments sharing characteristic, percentage change in risk. + References No definition available. + Details
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