v3.26.1
Inventories - Narrative (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Inventories [Abstract]      
Inventory write-offs ¥ 49,588 ¥ 40,203 ¥ 26,335