Cash segregated as deposits (Details) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Cash segregated as deposits [Abstract] | ||
| Cash segregated as deposits | ¥ 50,024 | ¥ 51,655 |
| Deposits received | ¥ 49,814 | ¥ 50,911 |
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- Definition Cash segregated as deposits [Abstract] No definition available.
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- Definition The amount of current deposits from customers. [Refer: Deposits from customers] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of short-term deposits held by the entity that are not classified as cash equivalents. [Refer: Cash equivalents] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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