Pledged Assets and Collateral (Pledged Assets Classified by Type of Liabilities) (Detail) ¥ in Millions |
Mar. 31, 2026
JPY (¥)
|
|---|---|
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | ¥ 30,517,532 |
| Deposits | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 14,945 |
| Call money and funds purchased | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 192,766 |
| Payables under repurchase agreements and securities lending transactions | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 22,401,173 |
| Other short-term borrowings and long-term debt | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 6,366,970 |
| Other | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | ¥ 1,541,678 |