v3.25.2
Short-term borrowings and long-term debt - Additional Information (Detail) - JPY (¥)
¥ in Millions
Aug. 29, 2025
Mar. 31, 2025
Disclosure of detailed information about borrowings [line items]    
Repayments of current borrowings ¥ 30,000  
Corporate Bonds Issued March Two Thousand And Twenty Five [Member]    
Disclosure of detailed information about borrowings [line items]    
Borrowings notional amount   ¥ 110,000