Defined Benefit Liabilities (Assets) - Details of Plan Assets (Detail) - KRW (₩) ₩ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Disclosure of defined benefit plans [abstract] | ||
| Equity instruments | ₩ 102,046 | ₩ 67,184 |
| Debt instruments | 238,979 | 394,138 |
| Short-term financial instruments, etc. | 915,960 | 833,245 |
| Fair value of plan assets | ₩ 1,256,985 | ₩ 1,294,567 |
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- Definition The amount instruments representing debt (rather than equity) contribute to the fair value of defined benefit plan assets. [Refer: 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 amount instruments representing equity (rather than debt) contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount investment funds contribute to the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [domain]; Investment funds [member]] Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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