Fees and Commissions Income (Details of Fees and Commissions Income) (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended |
Mar. 31, 2022 |
Mar. 31, 2021 |
Mar. 31, 2020 |
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
¥ 1,658,863
|
¥ 1,527,283
|
¥ 1,502,052
|
| Fees and commissions on deposits |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
51,032
|
50,131
|
53,684
|
| Fees and commissions on remittances and transfers |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
157,236
|
165,288
|
169,407
|
| Fees and commissions on foreign trading business |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
56,344
|
79,353
|
66,025
|
| Fees and commissions on credit card business |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
207,080
|
199,625
|
238,112
|
| Fees and commissions on security-related services |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
264,530
|
244,017
|
221,494
|
| Fees and commissions on administration and management services for investment funds |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
286,549
|
235,497
|
184,559
|
| Trust fees |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
133,322
|
125,658
|
119,919
|
| Guarantee fees |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
45,849
|
43,889
|
46,322
|
| Insurance commissions |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
42,353
|
42,117
|
44,415
|
| Fees and commissions on real estate business |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
65,611
|
48,110
|
49,764
|
| Other fees and commissions |
|
|
|
| Disaggregation of Contract Revenue [Line Items] |
|
|
|
| Total |
¥ 348,957
|
¥ 293,598
|
¥ 308,351
|