Pledged Assets and Collateral (Pledged Assets Classified by Type of Liabilities) (Detail) ¥ in Millions |
Mar. 31, 2025
JPY (¥)
|
|---|---|
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | ¥ 46,975,841 |
| Deposits | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 15,807 |
| Call money and funds purchased | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 89,946 |
| Payables under repurchase agreements and securities lending transactions | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 27,537,929 |
| Other short-term borrowings and long-term debt | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | 19,331,189 |
| Other | |
| Financial Instruments Owned and Pledged as Collateral [Line Items] | |
| Pledged assets | ¥ 970 |