Net Defined Benefit Liability (Asset) - Summary Of Key Actuarial Assumptions Used In Net Defined Benefit Liability Measurement (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of actuarial assumptions [Line Items] | |||
| Mortality rate | Issued by Korea Insurance Development Institute | Issued by Korea Insurance Development Institute | Issued by Korea Insurance Development Institute |
| Retirement rate | Experience rate for each employment classification | Experience rate for each employment classification | Experience rate for each employment classification |
| Weighted average maturity of defined benefit liability | The weighted average maturity of defined benefit liability is a minimum of 4.67 to a maximum 10.64 years. | ||
| Bottom of range | |||
| Disclosure of actuarial assumptions [Line Items] | |||
| Discount rate | 3.60% | 3.68% | 4.25% |
| Future wage growth rate | 2.40% | 2.40% | 2.24% |
| Weighted average duration of defined benefit obligation | 4 years 8 months 1 day | ||
| Top of range | |||
| Disclosure of actuarial assumptions [Line Items] | |||
| Discount rate | 5.48% | 4.62% | 5.15% |
| Future wage growth rate | 6.39% | 6.01% | 5.79% |
| Weighted average duration of defined benefit obligation | 10 years 7 months 20 days | ||