v3.26.1
Related party transactions - Disclosure of Key Management personnel (Detail) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of key management personnel compensation [Line Items]      
Base compensation ¥ 1,206 ¥ 1,425 ¥ 1,107
Bonus 1,206 1,607 1,054
Share compensation 1,993 1,940 1,862
Total ¥ 4,405 ¥ 4,972 ¥ 4,024