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Information about Valuation Techniques and Significant Unobservable Inputs Used in Valuation of Level Three Assets Measured at Fair Value on Nonrecurring Basis (Detail) (JPY ¥) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value | ¥ 118,768 | ¥ 98,073
Real Estate Collateral Dependent Loans | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value | 39,866 | 60,564
Valuation Technique(s) | Discounted cash flows | Discounted cash flows
Significant Unobservable Inputs | Discount rate | Discount rate
Weighted Average Discount Rate | 10.20% | 8.40%
Real Estate Collateral Dependent Loans | Direct Capitalization Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Valuation Technique(s) | Direct capitalization | Direct capitalization
Significant Unobservable Inputs | Capitalization rate | Capitalization rate
Weighted Average Discount Rate | 10.30% | 10.70%
Investment in Operating Leases and Other Operating Assets | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value | 60,665 | 21,960
Valuation Technique(s) | Discounted cash flows | Discounted cash flows
Significant Unobservable Inputs | Discount rate | Discount rate
Weighted Average Discount Rate | 5.60% | 6.90%
Land And Buildings Undeveloped Or Under Construction | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value | 18,237 | 11,845
Valuation Technique(s) | Discounted cash flows | Discounted cash flows
Significant Unobservable Inputs | Discount rate | Discount rate
Weighted Average Discount Rate | 7.10% | 6.60%
Certain investment in affiliates | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value |  | ¥ 3,704
Valuation Technique(s) |  | Discounted cash flows
Significant Unobservable Inputs |  | Discount rate
Weighted Average Discount Rate |  | 8.80%
Minimum | Real Estate Collateral Dependent Loans | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 5.30% | 5.40%
Minimum | Real Estate Collateral Dependent Loans | Direct Capitalization Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 5.60% | 5.00%
Minimum | Investment in Operating Leases and Other Operating Assets | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 5.20% | 4.40%
Minimum | Land And Buildings Undeveloped Or Under Construction | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 3.90% | 4.70%
Minimum | Certain investment in affiliates | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate |  | 5.00%
Maximum | Real Estate Collateral Dependent Loans | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 19.00% | 19.00%
Maximum | Real Estate Collateral Dependent Loans | Direct Capitalization Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 19.00% | 21.00%
Maximum | Investment in Operating Leases and Other Operating Assets | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 11.00% | 12.70%
Maximum | Land And Buildings Undeveloped Or Under Construction | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate | 9.90% | 9.60%
Maximum | Certain investment in affiliates | Discounted Cash Flows Valuation Technique |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Weighted Average Discount Rate |  | 9.20%

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- Definition Fair Value Assets Measured On Non Recurring Basis Significant Unobservable Inputs + References No definition available. + Details
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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Nonrecurring Basis, Asset Value + References No definition available. + Details
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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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