Financial Instruments - Capital Management - Additional Information (Details) - JPY (¥) ¥ in Millions	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Disclosure of detailed information about financial instruments [line items]
Percentage of change in discounted present value of cash flows	10.00%
Modifications of contractual cash flows of financial assets	¥ 0	¥ 0
Minimum capital adequacy ratio	4.00%

The increase (decrease) in financial assets resulting from the modification of contractual cash flows. [Refer: Financial assets]

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Balance Type:	debit
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