v3.25.2
Crypto asset borrowings (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Apr. 01, 2023
Platform Operator, Crypto Asset [Abstract]      
Crypto asset borrowings fee ¥ 51 ¥ 35 ¥ 49