Securitizations and Variable Interest Entities - Classification of consolidated VIEs' assets and liabilities (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Consolidated VIE assets | |||||||||
| Cash and cash equivalents | ¥ 4,298,693 | ¥ 4,424,462 | ¥ 4,239,359 | ||||||
| Trading assets | |||||||||
| Derivatives | [1] | 2,893,000 | 1,967,000 | ||||||
| Office buildings, land, equipment and facilities | 543,847 | 436,454 | |||||||
| Other | 1,598,457 | 1,124,473 | |||||||
| Total | 62,645,925 | 56,802,170 | |||||||
| Trading liabilities | |||||||||
| Derivatives | [1],[2] | 2,420,000 | 1,981,000 | ||||||
| Borrowings | |||||||||
| Short-term borrowings | [3] | 1,752,669 | 1,117,292 | ||||||
| Long-term borrowings | 15,544,956 | 13,373,678 | |||||||
| Total | 58,791,010 | 53,221,171 | |||||||
| Variable Interest Entity, primary beneficiary [Member] | |||||||||
| Consolidated VIE assets | |||||||||
| Cash and cash equivalents | 41,000 | 14,000 | |||||||
| Trading assets | |||||||||
| Equities | 531,000 | 527,000 | |||||||
| Debt securities | 647,000 | 643,000 | |||||||
| CMBS and RMBS | 54,000 | 64,000 | |||||||
| Derivatives | 1,000 | 1,000 | |||||||
| Private equity and debt investments | 160,000 | 83,000 | |||||||
| Office buildings, land, equipment and facilities | 61,000 | 3,000 | |||||||
| Other | 177,000 | 236,000 | |||||||
| Total | 1,672,000 | 1,571,000 | |||||||
| Trading liabilities | |||||||||
| Derivatives | 1,000 | 0 | |||||||
| Borrowings | |||||||||
| Short-term borrowings | 69,000 | 112,000 | |||||||
| Long-term borrowings | 839,000 | 935,000 | |||||||
| Other | 119,000 | 156,000 | |||||||
| Total | ¥ 1,028,000 | ¥ 1,203,000 | |||||||
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- Definition Borrowings [Abstract] No definition available.
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- Definition Private equity and debt investments No definition available.
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- Definition Trading Assets And Liabilities Textual [Abstract] No definition available.
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- Definition Trading equity. No definition available.
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- Definition Trading Liabilities [Abstract] No definition available.
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- Definition The net carrying amount of the consolidated Variable Interest Entity's other liabilities included in the reporting entity's statement of financial position. No definition available.
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as available-for-sale. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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