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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, unless otherwise specified | 12 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Guarantor Obligations [Line Items] |  |
Potential future payment | ¥ 694,542 | ¥ 622,292
Book value of guarantee liabilities | 23,960 | 22,481
Maturity of the longest contract (Years) | - | -
Corporate Loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | 349,435 | 316,650
Book value of guarantee liabilities | 3,577 | 2,587
Maturity of the longest contract (Years) | 2021 | 2026
Transferred Loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | 212,150 | 196,162
Book value of guarantee liabilities | 3,671 | 4,246
Maturity of the longest contract (Years) | 2045 | 2044
Consumer Loan |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | 96,183 | 77,034
Book value of guarantee liabilities | 9,607 | 8,085
Maturity of the longest contract (Years) | 2018 | 2018
Housing Loans |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | 33,704 | 29,510
Book value of guarantee liabilities | 7,013 | 7,437
Maturity of the longest contract (Years) | 2051 | 2051
Other |  |
Guarantor Obligations [Line Items] |  |
Potential future payment | 3,070 | 2,936
Book value of guarantee liabilities | ¥ 92 | ¥ 126
Maturity of the longest contract (Years) | 2024 | 2024

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Definition Describe the approximate term of the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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