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v3.23.2

Commitments, Guarantees, and Contingent Liabilities (Summary of Potential Future Payments, Book Value Recorded as Guarantee Liabilities of Guarantee Contracts Outstanding and Maturity of Longest Guarantee Contracts) (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Guarantor Obligations [Line Items] |  |
Potential future payment | ¥ 1,231,425 | ¥ 1,153,273
Book value of guarantee liabilities | 57,456 | 60,458
Transferred loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | 436,069 | 417,587
Book value of guarantee liabilities | ¥ 2,185 | ¥ 4,103
Maturity of the longest contract (Years) | 2062 | 2062
Consumer loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | ¥ 295,273 | ¥ 284,891
Book value of guarantee liabilities | ¥ 48,207 | ¥ 47,461
Maturity of the longest contract (Years) | 2034 | 2033
Real estate loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | ¥ 18,193 | ¥ 12,087
Book value of guarantee liabilities | ¥ 2,031 | ¥ 3,953
Maturity of the longest contract (Years) | 2048 | 2048
Other |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | ¥ 2,484 | ¥ 2,294
Book value of guarantee liabilities | ¥ 0 | ¥ 46
Maturity of the longest contract (Years) | 2036 | 2035
Corporate loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | ¥ 479,406 | ¥ 436,414
Book value of guarantee liabilities | ¥ 5,033 | ¥ 4,895
Maturity of the longest contract (Years) | 2029 | 2027

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
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