v3.26.1
Financial Risk Management - Balance of Loans and Advances and Deposits (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2026
Mar. 31, 2025
Disclosure Of Loans and advances, and Deposits [abstract]    
Loans and advances ¥ 130,516,241 ¥ 125,190,819
Deposits ¥ 201,930,427 ¥ 190,022,742