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Commitments, Guarantees and Contingent Liabilities (Tables) | 6 Months Ended
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Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract] |
Amounts Due of Certain Computer Systems Operated and Maintained under Non-cancelable Contracts with Third-party Service Providers | As of March 31, 2025 and September 30, 2025, the amounts due are as follows:
|  | Millions of yen |
|  | March 31, 2025 |  |  | September 30, 2025 |
Within one year |  | ¥ | 5,809 |  |  | ¥ | 5,812 |
More than one year |  |  | 7,660 |  |  |  | 6,113 |
Total |  | ¥ | 13,469 |  |  | ¥ | 11,925 |
Summary of Potential Future Payments, Book Value Recorded as Guarantee Liabilities of Guarantee Contracts Outstanding and Maturity of Longest Guarantee Contracts | The following table represents the summary of potential future payments, book value recorded as guarantee liabilities of the guarantee contracts outstanding and maturity of the longest guarantee contracts as of March 31, 2025 and September 30, 2025:
|  | March 31, 2025 |  |  | September 30, 2025 |
|  | Millions of yen |  |  | Fiscal year |  |  | Millions of yen |  |  | Fiscal year |
Guarantees |  | Potential future payment |  |  | Book value of guarantee liabilities |  |  | Maturity of the longest contract |  |  | Potential future payment |  |  | Book value of guarantee liabilities |  |  | Maturity of the longest contract |
Corporate loans |  | ¥ | 558,862 |  |  | ¥ | 5,223 |  |  |  | 2031 |  |  | ¥ | 570,319 |  |  | ¥ | 5,565 |  |  |  | 2032 |
Transferred loans |  |  | 543,453 |  |  |  | 6,918 |  |  |  | 2062 |  |  |  | 550,686 |  |  |  | 8,535 |  |  |  | 2062 |
Real estate loans |  |  | 8,408 |  |  |  | 135 |  |  |  | 2048 |  |  |  | 3,214 |  |  |  | 0 |  |  |  | 2026 |
Other |  |  | 13,261 |  |  |  | 0 |  |  |  | 2044 |  |  |  | 15,411 |  |  |  | 0 |  |  |  | 2043 |
Total |  | ¥ | 1,123,984 |  |  | ¥ | 12,276 |  |  |  | — |  |  | ¥ | 1,139,630 |  |  | ¥ | 14,100 |  |  |  | — |
Assets Provided as Collateral for Short-Term and Long-Term Debt Payables to Financial Institutions | Collateral— Other than the assets of the consolidated VIEs pledged as collateral for financing described in Note 10 “Variable Interest Entities”, the Company and certain subsidiaries provide the following assets as collateral for the short-term and long-term debt payables to financial institutions as of March 31, 2025 and September 30, 2025:
|  | Millions of yen |
|  | March 31, 2025 |  |  | September 30, 2025 |
Lease payments, loans and investment in operating leases |  | ¥ | 301,092 |  |  | ¥ | 294,204 |
Investment in securities |  |  | 299,588 |  |  |  | 338,366 |
Property under facility operations |  |  | 303,491 |  |  |  | 345,472 |
Other assets and other |  |  | 115,982 |  |  |  | 165,832 |
Total |  | ¥ | 1,020,153 |  |  | ¥ | 1,143,874 |

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- Definition Tabular disclosure of financial instruments held by the entity for its own account for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Description may include equity, fixed income, debt or other securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481444/860-30-45-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A + Details
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- Definition Tabular disclosure of each guarantee obligation, or each group of similar guarantee obligations, including (a) the nature of the guarantee, including its term, how it arose, and the events or circumstances that would require the guarantor to perform under the guarantee; (b) the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee; (c) the current carrying amount of the liability, if any, for the guarantor's obligations under the guarantee; and (d) the nature of any recourse provisions under the guarantee, and any assets held either as collateral or by third parties, and any relevant related party disclosure. Excludes disclosures about product warranties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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