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Goodwill and Other Intangible Assets - Additional Information (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | ¥ 0 | ¥ 562 | ¥ 1,506
Aggregate amortization expenses for intangible assets | 34,212 | 32,235 | 28,748
Estimated amortization expenses in fiscal 2024 | 39,737 |  |
Estimated amortization expenses in fiscal 2025 | 35,454 |  |
Estimated amortization expenses in fiscal 2026 | 31,148 |  |
Estimated amortization expenses in fiscal 2027 | 28,437 |  |
Estimated amortization expenses in fiscal 2028 | 24,291 |  |
Intangible assets subject to amortization acquired | 78,181 |  |
Corporate Financial Services and Maintenance Leasing |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill |  |  | 12
Impairment of intangible assets excluding goodwill | 1 | 650 | 2
Real Estate Segment |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | 0 | 191 | 0
Impairment of intangible assets excluding goodwill |  |  | 217
PE Investment and Concession Segment |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment of intangible assets excluding goodwill |  |  | 4
ORIX USA |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | 0 | 0 | 1,494
Impairment of intangible assets excluding goodwill | 110 |  | 414
Environment and Energy |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | 0 | 0 | 0
Impairment of intangible assets excluding goodwill |  |  | 2
Aircraft and Ships |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | 0 | 0 | 0
Impairment of intangible assets excluding goodwill | 405 | 259 | 505
Insurance [Member] |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | 0 | 371 | 0
Impairment of intangible assets excluding goodwill |  |  | 2
ORIX Europe [Member] |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Impairment losses on goodwill | 0 | 0 | ¥ 0
Impairment of intangible assets excluding goodwill |  | ¥ 21,090 |
Software |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Intangible assets subject to amortization acquired | ¥ 25,279 |  |
Weighted average amortization period | 6 years |  |
Customer relationships and others |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Intangible assets subject to amortization acquired | ¥ 14,703 |  |
Weighted average amortization period | 14 years |  |
License [Member] |  |  |
Intangible Assets by Major Class [Line Items] |  |  |
Intangible assets subject to amortization acquired | ¥ 15,500 |  |
Weighted average amortization period | 15 years |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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