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Cash Flow Information - Additional Information (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Schedule of Cash Flow, Supplemental [Line Items] |  |  |
Real estate under operating leases transferred from installment loans as a result of real estate collateral acquired from non-recourse loans | ¥ 9,442 | ¥ 750 | ¥ 464
Other assets transferred from installment loans as a result of real estate collateral acquired from non-recourse loans | 29 | 12 | 6
Assets decreased due to deconsolidation of VIEs | 1,777 | 7,752 | 13,378
Liabilities decreased due to deconsolidation of VIEs | 0 | ¥ 3,916 | ¥ 943
Investment in securities transferred from installment loans as a result of restructuring | ¥ 3,452 |  |

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