Revenue from services provided to customers - Revenues by types of service (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Disaggregation of Revenue [Abstract] | |||
| Commissions | ¥ 455,289 | ¥ 407,011 | ¥ 364,095 |
| Fees from investment banking | 200,548 | 212,234 | 173,265 |
| Asset management and portfolio service fees | 468,600 | 378,196 | 310,154 |
| Other revenue | 79,735 | 71,221 | 48,971 |
| Total | ¥ 1,204,172 | ¥ 1,068,662 | ¥ 896,485 |
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- Definition Revenue recognized in the period for (1) performance(incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees, (4) fees charged for services related to holding, advising, and managing customer investment assets. No definition available.
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- Definition Other revenue from contract with customer, excluding assessed tax No definition available.
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- Definition Amount of commission revenue from buying and selling securities on behalf of customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Includes (1) underwriting revenue (the spread between the resale price received and the cost of the securities and related expenses) generated through the purchasing, distributing and reselling of new issues of securities (alternatively, could be a secondary offering of a large block of previously issued securities); and (2) fees earned for mergers, acquisitions, divestitures, restructurings, and other types of financial advisory services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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