Deposits (Estimated amounts Of Uninsured Time Deposits And Certificates Of Deposit Issued By Domestic And Foreign Offices) (Detail) - JPY (¥) ¥ in Billions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Domestic | ||
| Deposits From Banking Clients [Line Items] | ||
| Domestic deposit | ¥ 21,490 | ¥ 21,081 |
| Foreign | ||
| Deposits From Banking Clients [Line Items] | ||
| Domestic deposit | 38,084 | 36,467 |
| Time deposits | Domestic | ||
| Deposits From Banking Clients [Line Items] | ||
| Domestic deposit | 19,238 | 18,272 |
| Time deposits | Foreign | ||
| Deposits From Banking Clients [Line Items] | ||
| Domestic deposit | 28,422 | 24,877 |
| Certificates of deposit | Domestic | ||
| Deposits From Banking Clients [Line Items] | ||
| Domestic deposit | 2,253 | 2,809 |
| Certificates of deposit | Foreign | ||
| Deposits From Banking Clients [Line Items] | ||
| Domestic deposit | ¥ 9,662 | ¥ 11,590 |