Shareholders' Equity - Number of Shares of Preferred Stock (Detail) - shares |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Type 5 preferred stock [member] | ||
| Disclosure of classes of share capital [line items] | ||
| Preferred stock, Authorized | 167,000 | 167,000 |
| Preferred stock, Issued | ||
| Type 7 preferred stock [member] | ||
| Disclosure of classes of share capital [line items] | ||
| Preferred stock, Authorized | 167,000 | 167,000 |
| Preferred stock, Issued | ||
| Type 8 preferred stock [member] | ||
| Disclosure of classes of share capital [line items] | ||
| Preferred stock, Authorized | 115,000 | 115,000 |
| Preferred stock, Issued | ||
| Type 9 preferred stock [member] | ||
| Disclosure of classes of share capital [line items] | ||
| Preferred stock, Authorized | 115,000 | 115,000 |
| Preferred stock, Issued |