Commitments, Guarantees, and Contingent Liabilities (Assets Provided as Collateral for Short-Term and Long-Term Debt Payables to Financial Institutions) (Detail) - JPY (¥) ¥ in Millions |
Sep. 30, 2026 |
Mar. 31, 2026 |
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| Commitments and Contingencies Disclosure [Line Items] | ||
| Finance lease receivables, loans and investment in operating leases | ¥ 2,487,406 | ¥ 2,527,163 |
| Other assets and other | 1,910,090 | 1,912,870 |
| Total Assets | 15,606,595 | 18,002,776 |
| Asset Pledged as Collateral without Right | ||
| Commitments and Contingencies Disclosure [Line Items] | ||
| Finance lease receivables, loans and investment in operating leases | 208,232 | 201,058 |
| Investment in securities | 97,171 | 118,860 |
| Property under facility operations | 319,928 | 313,841 |
| Other assets and other | 129,419 | 145,612 |
| Total Assets | ¥ 754,750 | ¥ 779,371 |
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- Definition Commitments and Contingencies Disclosure [Line Items] No definition available.
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- Definition Pledged Assets, Not Separately Reported, Property, Plant and Equipment. 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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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and 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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- Definition Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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