Employee Benefits - Summary of Sensitivity Analysis for Actuarial Assumptions (Parenthetical) (Detail) |
Mar. 31, 2025 |
Mar. 31, 2024 |
|---|---|---|
| Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
| Percentage of change in discount rate | 1.00% | 1.00% |
| Percentage of change in future salary growth | 1.00% | 1.00% |
| Bottom of range [member] | ||
| Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
| Percentage of change in withdrawal rate | 5.00% | 5.00% |
| Top of range [member] | ||
| Disclosure of sensitivity analysis for actuarial assumptions [line items] | ||
| Percentage of change in withdrawal rate | 10.00% | 10.00% |