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v3.25.2

Income Taxes (Total Income Tax Expense Recognized) (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Income Tax Disclosure [Abstract] |  |  |
Provision for income taxes | ¥ 128,828 | ¥ 131,388 | ¥ 95,245
Income tax expense (benefit) allocated to other comprehensive income (loss): |  |  |
Net change of unrealized gains (losses) on investment in securities | (60,260) | (27,157) | (41,961)
Net change of impact of changes in policy liability discount rate | 54,382 | 32,471 | 43,576
Net change of debt valuation adjustments | (13) | (74) | 20
Net change of defined benefit pension plans | 2,063 | 5,554 | 1,630
Net change of foreign currency translation adjustments | 2,484 | (30,992) | (17,325)
Net change of unrealized gains (losses) on derivative instruments | (441) | (1,523) | 3,514
Other direct adjustments to shareholders' equity | 22 | 32 | 36
Total income tax expense | ¥ 127,065 | ¥ 109,699 | ¥ 84,735

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