v3.25.2
Foreign Activities (Analysis of Certain Asset and Liability Accounts Related to Foreign Activities) (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Foreign Activities Disclosure [Line Items]      
Cash and due from banks ¥ 4,591,186 ¥ 4,416,646  
Interest-earning deposits in other banks 104,706,928 105,701,977  
Cash, due from banks and interest-earning deposits in other banks 109,298,114 110,118,623 ¥ 113,953,858
Trading account assets 59,417,128 49,769,406  
Investment securities 58,318,547 62,399,298  
Loans—net of unearned income, unamortized premiums and deferred loan fees 131,438,515 127,910,303  
Deposits 249,415,006 247,136,000  
Funds borrowed:      
Call money, funds purchased 5,016,678 5,094,171  
Payables under repurchase agreements 43,663,859 35,690,452  
Payables under securities lending transactions 718,451 1,016,938  
Other short-term borrowings 24,636,926 11,141,867  
Long-term debt 21,022,407 40,012,819  
Trading account liabilities 21,502,912 16,579,522  
Foreign      
Foreign Activities Disclosure [Line Items]      
Cash and due from banks 786,831 702,754  
Interest-earning deposits in other banks 12,055,034 12,772,324  
Cash, due from banks and interest-earning deposits in other banks 12,841,865 13,475,078  
Trading account assets 36,473,239 32,474,396  
Investment securities 12,773,480 12,896,242  
Loans—net of unearned income, unamortized premiums and deferred loan fees 56,713,215 57,430,845  
Deposits 65,410,708 63,833,368  
Funds borrowed:      
Call money, funds purchased 155,975 3,061  
Payables under repurchase agreements 16,039,173 13,510,745  
Payables under securities lending transactions 32,194 90,068  
Other short-term borrowings 6,941,877 6,385,135  
Long-term debt 1,864,473 1,756,948  
Total 25,033,692 21,745,957  
Trading account liabilities ¥ 8,026,912 ¥ 8,590,562