v3.26.1
Due to Trust Account, Short-term Borrowings and Long-term Debt (Summary of Subsequent Maturities of Long-term Debt) (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2026
Mar. 31, 2025
Long-term debt by maturity:    
2027 ¥ 3,010,347  
2028 3,086,653  
2029 2,230,638  
2030 1,044,076  
2031 1,035,026  
2032 and thereafter 11,494,049  
Total 21,900,789 ¥ 21,036,051
MUFG    
Long-term debt by maturity:    
2027 492,606  
2028 1,558,437  
2029 1,370,383  
2030 767,242  
2031 712,653  
2032 and thereafter 8,953,788  
Total 13,855,109 12,237,098
BK    
Long-term debt by maturity:    
2027 1,712,163  
2028 1,079,297  
2029 403,349  
2030 150,040  
2031 190,924  
2032 and thereafter 1,206,098  
Total 4,741,871 5,780,373
Other subsidiaries    
Long-term debt by maturity:    
2027 805,578  
2028 448,919  
2029 456,906  
2030 126,794  
2031 131,449  
2032 and thereafter 1,334,163  
Total ¥ 3,303,809 ¥ 3,018,580