Critical Accounting Estimates and Judgments - Summary of Probability Weightings of Each Scenario (Detail) |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Upside [Member] | ||
| Disclosure Of Detailed Information Of Probability Weightings Of Each Scenario The Group Estimates [Line Items] | ||
| GDP Weighted Probability Rate | 20.00% | 20.00% |
| Base [Member] | ||
| Disclosure Of Detailed Information Of Probability Weightings Of Each Scenario The Group Estimates [Line Items] | ||
| GDP Weighted Probability Rate | 60.00% | 60.00% |
| Downside [Member] | ||
| Disclosure Of Detailed Information Of Probability Weightings Of Each Scenario The Group Estimates [Line Items] | ||
| GDP Weighted Probability Rate | 18.00% | 19.00% |
| Severe Downside [Member] | ||
| Disclosure Of Detailed Information Of Probability Weightings Of Each Scenario The Group Estimates [Line Items] | ||
| GDP Weighted Probability Rate | 2.00% | 1.00% |