Financial Instruments - Summary of Sensitivity Analysis For Other Investments (Detail) - Other Investments - Equity Securities (FVTPL) [Member] - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disclosure Of Sensitivity Analysis For Actuarial Assumptions [Line Items] | ||
| Net revenue multiple, increase in profit or loss | $ (4) | $ (4) |
| Net revenue multiple, decrease in profit or loss | $ 4 | $ 4 |