Net Defined Benefit Liability (Asset) - Summary Of Current Service Cost, Net Interest Income, Loss (Gain) On The Curtailment Or Settlement And Remeasurements (Details) - KRW (₩) ₩ in Millions |
12 Months Ended | ||||||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Disclosure of postemployment benefits expense recognized in net income and total comprehensive income [Abstract] | |||||||
| Current service cost | ₩ 161,468 | ₩ 143,051 | ₩ 132,302 | ||||
| Past service cost | [1] | 28,060 | 0 | 0 | |||
| Net interest income (expense) | (2,014) | (14,022) | (18,867) | ||||
| Cost recognized in net income | 187,514 | 129,029 | 113,435 | ||||
| Remeasurements | [2] | 15,539 | 84,590 | 107,962 | |||
| Cost recognized in total comprehensive income | 203,053 | 213,619 | 221,397 | ||||
| Retirement benefit service costs defined contribution plans | ₩ 13,885 | ₩ 5,470 | ₩ 6,217 | ||||
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of other comprehensive income, before tax, related to gains (losses) on remeasurements of defined benefit plans, which comprise actuarial gains and losses; the return on plan assets, excluding amounts included in net interest on the net defined benefit liability (asset); and any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefit liability (asset). [Refer: Other comprehensive income; Defined benefit plans [domain]; Plan assets [member]; Net defined benefit liability (asset)] [Contrast: Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from past service cost. Past service cost is the change in the present value of the defined benefit obligation for employee service in prior periods, resulting from a plan amendment (the introduction or withdrawal of, or changes to, a defined benefit plan) or a curtailment (a significant reduction by the entity in the number of employees covered by a plan). [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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