Financial Risk Management - Interest Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2026	Mar. 31, 2025
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Impact on profit before income taxes	¥ (33,075)	¥ (22,118)

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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