Income Taxes (Total Income Tax Expense Recognized) (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Income Tax Disclosure [Abstract] | |||
| Provision for income taxes | ¥ 233,103 | ¥ 128,828 | ¥ 131,388 |
| Income tax expense (benefit) allocated to other comprehensive income (loss): | |||
| Net change of unrealized gains (losses) on investment in securities | (88,096) | (60,260) | (27,157) |
| Net change of impact of changes in policy liability discount rate | 100,702 | 54,382 | 32,471 |
| Net change of debt valuation adjustments | 78 | (13) | (74) |
| Net change of defined benefit pension plans | 7,711 | 2,063 | 5,554 |
| Net change of foreign currency translation adjustments | (12,045) | 2,484 | (30,992) |
| Net change of unrealized gains (losses) on derivative instruments | 1,016 | (441) | (1,523) |
| Other direct adjustments to shareholders' equity | 57 | 22 | 32 |
| Total income tax expense | ¥ 242,526 | ¥ 127,065 | ¥ 109,699 |
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- Definition Other comprehensive income loss changes in policy liability discount rate. No definition available.
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- Definition Other Comprehensive Income Loss Debt Valuation Adjustment Net Change, Tax No definition available.
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- References No definition available.
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- Definition The tax effect of an increase or decrease in contributed capital (for example, deductible expenditures reported as a reduction of the proceeds from issuing capital stock) during the period charged or credited directly to shareholders' equity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of income tax expense (benefit) for continuing operations, discontinued operations, other comprehensive income, and items charged (credited) directly to shareholders' equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after adjustments, of tax expense (benefit) for gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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