Segment and geographic information - Reconciliation of combined business segments' results included in preceding table to reported Net revenue, Non-interest expenses and Income before income taxes (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Segment and Geographic Information [Abstract] | |||||||||
| Net revenue | ¥ 2,159,442 | ¥ 1,894,034 | ¥ 1,572,341 | ||||||
| Unrealized gain (loss) on investments in equity securities held for operating purposes | [1] | 8,271 | (1,549) | (10,341) | |||||
| Consolidated net revenue | [2] | 2,167,713 | 1,892,485 | 1,562,000 | |||||
| Non-interest expenses | 1,627,892 | 1,420,521 | 1,288,150 | ||||||
| Consolidated non-interest expenses | [3] | 1,627,892 | 1,420,521 | 1,288,150 | |||||
| Income before income taxes | 531,550 | 473,513 | 284,191 | ||||||
| Unrealized gain (loss) on investments in equity securities held for operating purposes | [1] | 8,271 | (1,549) | (10,341) | |||||
| Consolidated income before income taxes | ¥ 539,821 | ¥ 471,964 | ¥ 273,850 | ||||||
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- Definition Total revenue after financial expenses No definition available.
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- Definition Non-interest expenses before unrealized gain (loss) on investments in equity securities held for operating purposes No definition available.
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- Definition Unrealized Gain Loss on Investments in Consolidated Income Loss Before Income Taxes No definition available.
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- Definition Unrealized Gain Loss on Securities Held for Operating Purposes No definition available.
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Total aggregate amount of all noninterest expense. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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