Premises and Equipment (Narrative) (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
Mar. 31, 2020 |
|
| Property, Plant and Equipment [Line Items] | |||
| Impairment losses for long-lived assets | ¥ 6,574 | ¥ 11,424 | ¥ 16,575 |
| Impairment of assets held for sale | 134,141 | 0 | 0 |
| Real estate | |||
| Property, Plant and Equipment [Line Items] | |||
| Impairment of assets held for sale | ¥ 58 | ¥ 773 | ¥ 194 |