Fees and Commissions Income (Tables)
 12 Months Ended
Mar. 31, 2022
Revenue from Contract with Customer [Abstract]  
Details of Fees and Commissions Income Details of fees and commissions income for the fiscal years ended March 31, 2020, 2021 and 2022 were as follows:
 202020212022
 (in millions)
Fees and commissions on deposits¥53,684 ¥50,131 ¥51,032 
Fees and commissions on remittances and transfers169,407165,288157,236
Fees and commissions on foreign trading business66,02579,35356,344
Fees and commissions on credit card business238,112199,625207,080
Fees and commissions on security-related services221,494244,017264,530
Fees and commissions on administration and management services for investment funds184,559235,497286,549
Trust fees119,919125,658133,322
Guarantee fees(1)
46,32243,88945,849
Insurance commissions44,41542,11742,353
Fees and commissions on real estate business49,76448,11065,611
Other fees and commissions(2)
308,351293,598348,957
Total¥1,502,052 ¥1,527,283 ¥1,658,863 
Notes:
(1)Guarantee fees are not within the scope of the guidance on revenue from contracts with customers.
(2)Other fees and commissions include non-refundable financing related fees that are not within the scope of the guidance on revenue from contracts with customers.