Defined Benefit Liabilities (Assets) - Effects on Defined Benefit Obligations if Each of Significant Actuarial Assumptions Changes Within Expectable and Reasonable Range (Detail) ₩ in Millions |
Dec. 31, 2025
KRW (₩)
|
|---|---|
| Discount rate [Member] | |
| Disclosure of sensitivity analysis for actuarial assumptions [line items] | |
| Increase in defined benefit obligations | ₩ (37,121) |
| Increase in assumption | 0.50% |
| Decrease in defined benefit obligations | ₩ 39,709 |
| Decrease in assumption | 0.50% |
| Expected salary increase rate [Member] | |
| Disclosure of sensitivity analysis for actuarial assumptions [line items] | |
| Increase in defined benefit obligations | ₩ 39,780 |
| Increase in assumption | 0.50% |
| Decrease in defined benefit obligations | ₩ (37,537) |
| Decrease in assumption | 0.50% |