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Employee Benefits - Changes to Defined Benefit Obligation Due to Reasonably Possible Changes to one of the Relevant Actuarial Assumptions (Detail) ₩ in Millions | Dec. 31, 2025 KRW (₩)
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Discount rate [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Affect on defined benefit obligation due to reasonably possible 1% increase in actuarial assumption | ₩ (164,782)
Affect on defined benefit obligation due to reasonably possible 1% decrease in actuarial assumption | ₩ 190,289
Percentage of reasonably possible 1% decrease in actuarial assumption | 7.20%
Percentage of reasonably possible 1% increase decrease in actuarial assumption | (6.30%)
Expected future increase in salaries [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Affect on defined benefit obligation due to reasonably possible 1% increase in actuarial assumption | ₩ 186,448
Affect on defined benefit obligation due to reasonably possible 1% decrease in actuarial assumption | ₩ (165,385)
Percentage of reasonably possible 1% increase in actuarial assumption | 7.10%
Percentage of reasonably possible 1% increase decrease in actuarial assumption | (6.30%)

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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The reasonably possible percentage of the decrease in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The reasonably possible percentage of the increase in the actuarial assumption used to determine the present value of defined benefit obligation. [Refer: Actuarial assumptions [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 145 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_145_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Percentage of reasonably possible increase decrease in actuarial assumption. + References No definition available. + Details
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