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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, 2023 | Mar. 31, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Investment in securities | ¥ 2,940,858 | ¥ 2,852,349
Property under facility operations | 620,994 | ¥ 561,846
Asset Pledged as Collateral [Member] |  |
Debt Instrument [Line Items] |  |
Lease payments, loans and investment in operating leases | 148,057 |
Investment in securities | 183,441 |
Property under facility operations | 130,191 |
Other assets and other | 110,159 |
Total | ¥ 571,848 |

X
- Definition Investment in securities. + References No definition available. + Details
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- Definition Lease payments, loans and investment in operating leases. + References No definition available. + Details
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- Definition Other assets and other. + References No definition available. + Details
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- Definition Pledged Assets, Other, Not Separately Reported on Statement of Financial Position. + References No definition available. + Details
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Namespace Prefix: | ck0001070304_
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- Definition Property under Facility Operations + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Balance Type: |
Period Type: |