v3.25.2
Right of Use Assets and Lease Liabilities - Summary of Right of Use Asset and Lease Liability (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2025
Mar. 31, 2024
Types of Original Assets    
Types of Original Assets ¥ 583,068 ¥ 532,835
Land [Member]    
Types of Original Assets    
Types of Original Assets 73,694 60,388
Buildings [Member]    
Types of Original Assets    
Types of Original Assets 355,489 341,408
Other [Member]    
Types of Original Assets    
Types of Original Assets ¥ 153,885 ¥ 131,040