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v3.25.2

Short-Term and Long-Term Debt (Assets Provided as Collateral for Short-Term and Long-Term Debt Payables to Financial Institutions) (Detail) - JPY (¥) ¥ in Millions | Mar. 31, 2025 | Mar. 31, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |
Investment in securities | ¥ 3,234,547 | ¥ 3,263,079
Property under facility operations | 771,851 | ¥ 689,573
Asset Pledged as Collateral [Member] |  |
Debt Instrument [Line Items] |  |
Lease payments, loans and investment in operating leases | 301,092 |
Investment in securities | 299,588 |
Property under facility operations | 303,491 |
Other assets and other | 115,982 |
Total | ¥ 1,020,153 |

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