Financial Risk Management - Deposits by Domestic and Foreign Offices (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
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|---|---|---|---|---|
| Disclosure of deposits from customers [Line Items] | ||||
| Non-interest-bearing demand deposits | ¥ 31,406,231 | ¥ 32,935,364 | ||
| Interest-bearing demand deposits | 83,600,262 | 80,370,602 | ||
| Deposits at notice | 17,580,666 | 14,655,807 | ||
| Time deposits | 42,142,744 | 34,482,582 | ||
| Negotiable certificates of deposit | 15,667,132 | 17,175,392 | ||
| Others | [1] | 11,533,392 | 10,402,995 | |
| Deposits | 201,930,427 | 190,022,742 | ||
| Domestic [member] | ||||
| Disclosure of deposits from customers [Line Items] | ||||
| Non-interest-bearing demand deposits | 28,069,136 | 29,902,509 | ||
| Interest-bearing demand deposits | 75,696,259 | 74,165,956 | ||
| Deposits at notice | 598,846 | 593,258 | ||
| Time deposits | 25,381,678 | 21,825,843 | ||
| Negotiable certificates of deposit | 2,985,452 | 4,264,295 | ||
| Others | 11,292,205 | 10,222,280 | ||
| Deposits | 144,023,576 | 140,974,141 | ||
| Foreign [member] | ||||
| Disclosure of deposits from customers [Line Items] | ||||
| Non-interest-bearing demand deposits | 3,337,095 | 3,032,855 | ||
| Interest-bearing demand deposits | 7,904,003 | 6,204,646 | ||
| Deposits at notice | 16,981,820 | 14,062,549 | ||
| Time deposits | 16,761,066 | 12,656,739 | ||
| Negotiable certificates of deposit | 12,681,680 | 12,911,097 | ||
| Others | 241,187 | 180,715 | ||
| Deposits | ¥ 57,906,851 | ¥ 49,048,601 | ||
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