Net Defined Benefit Liability (Asset) - Summary Of Fair Value Of Plan Assets (Details) - KRW (₩) ₩ in Millions |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Disclosure of fair value of plan assets [abstract] | ||
| Cash and due from banks and others | ₩ 2,157,163 | ₩ 1,892,290 |
| Return on plan assets, net defined benefit liability (asset) | 66,086 | ₩ 69,658 |
| Estimate of contributions expected to be paid to plan | ₩ 159,332 | |
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- Definition The amount cash and cash equivalents contribute to the fair value of defined benefit plan assets. [Refer: Cash and cash equivalents; Plan assets, at fair value; Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition The estimate of the expected contributions to be made to a defined benefit plan for the next annual reporting period. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [domain]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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