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Estimated Fair Value of Financial Instruments | 12 Months Ended
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Mar. 31, 2011
Estimated Fair Value of Financial Instruments | 30. Estimated Fair Value of Financial Instruments The following information is provided to help readers gain an understanding of the relationship between amounts reported in the accompanying consolidated financial statements and the related market or fair value. The disclosures include financial instruments and derivatives financial instruments, except for investment in direct financing leases, investment in subsidiaries and affiliates, pension obligations and insurance contracts. March 31, 2010
|  | Millions of yen |
|  | Carrying amount |  |  | Estimated fair value |
Trading instruments |  |  |  |  |  |  |  |
Trading securities |  | ¥ | 49,596 |  |  | ¥ | 49,596 |
Futures, Foreign exchange contracts: |  |  |  |  |  |  |  |
Assets |  |  | 1,198 |  |  |  | 1,198 |
Liabilities |  |  | 766 |  |  |  | 766 |
Credit derivatives held/written: |  |  |  |  |  |  |  |
Assets |  |  | 528 |  |  |  | 528 |
Liabilities |  |  | 40 |  |  |  | 40 |
Options held/written, Caps held: |  |  |  |  |  |  |  |
Assets |  |  | 555 |  |  |  | 555 |
Liabilities |  |  | 189 |  |  |  | 189 |
Non-trading instruments |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
Cash and cash equivalents |  | ¥ | 639,087 |  |  | ¥ | 639,087 |
Restricted cash |  |  | 77,486 |  |  |  | 77,486 |
Time deposits |  |  | 548 |  |  |  | 548 |
Installment loans (net of allowance for probable loan losses) |  |  | 2,330,697 |  |  |  | 2,318,466 |
Investment in securities: |  |  |  |  |  |  |  |
Practicable to estimate fair value |  |  | 903,658 |  |  |  | 902,943 |
Not practicable to estimate fair value |  |  | 150,904 |  |  |  | 150,904 |
Liabilities: |  |  |  |  |  |  |  |
Short-term debt |  |  | 573,565 |  |  |  | 573,565 |
Deposits |  |  | 853,269 |  |  |  | 855,620 |
Long-term debt |  |  | 3,836,270 |  |  |  | 3,869,238 |
Futures, Foreign exchange contracts: |  |  |  |  |  |  |  |
Assets |  |  | 877 |  |  |  | 877 |
Liabilities |  |  | 4,971 |  |  |  | 4,971 |
Foreign currency swap agreements: |  |  |  |  |  |  |  |
Assets |  |  | 13,724 |  |  |  | 13,724 |
Liabilities |  |  | 23,053 |  |  |  | 23,053 |
Interest rate swap agreements: |  |  |  |  |  |  |  |
Assets |  |  | 192 |  |  |  | 192 |
Liabilities |  |  | 2,956 |  |  |  | 2,956 |
March 31, 2011
|  | Millions of yen |  |  | Millions of U.S. dollars |
|  | Carrying amount |  |  | Estimated fair value |  |  | Carrying amount |  |  | Estimated fair value |
Trading instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading securities |  | ¥ | 71,991 |  |  | ¥ | 71,991 |  |  | $ | 866 |  |  | $ | 866 |
Futures, Foreign exchange contracts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  | 1,524 |  |  |  | 1,524 |  |  |  | 18 |  |  |  | 18 |
Liabilities |  |  | 1,254 |  |  |  | 1,254 |  |  |  | 15 |  |  |  | 15 |
Credit derivatives held/written: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  | 49 |  |  |  | 49 |  |  |  | 1 |  |  |  | 1 |
Liabilities |  |  | 236 |  |  |  | 236 |  |  |  | 3 |  |  |  | 3 |
Options held/written, Caps held, and other: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  | 3,467 |  |  |  | 3,467 |  |  |  | 42 |  |  |  | 42 |
Liabilities |  |  | 2,071 |  |  |  | 2,071 |  |  |  | 25 |  |  |  | 25 |
Non-trading instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | ¥ | 732,127 |  |  | ¥ | 732,127 |  |  | $ | 8,805 |  |  | $ | 8,805 |
Restricted cash |  |  | 118,065 |  |  |  | 118,065 |  |  |  | 1,420 |  |  |  | 1,420 |
Time deposits |  |  | 5,148 |  |  |  | 5,148 |  |  |  | 62 |  |  |  | 62 |
Installment loans (net of allowance for probable loan losses) |  |  | 2,850,215 |  |  |  | 2,860,886 |  |  |  | 34,278 |  |  |  | 34,406 |
Investment in securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Practicable to estimate fair value |  |  | 937,129 |  |  |  | 937,541 |  |  |  | 11,270 |  |  |  | 11,275 |
Not practicable to estimate fair value |  |  | 166,261 |  |  |  | 166,261 |  |  |  | 2,000 |  |  |  | 2,000 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt |  |  | 478,633 |  |  |  | 478,633 |  |  |  | 5,756 |  |  |  | 5,756 |
Deposits |  |  | 1,065,175 |  |  |  | 1,070,513 |  |  |  | 12,810 |  |  |  | 12,874 |
Long-term debt |  |  | 4,531,268 |  |  |  | 4,491,271 |  |  |  | 54,495 |  |  |  | 54,014 |
Futures, Foreign exchange contracts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  | 1,109 |  |  |  | 1,109 |  |  |  | 13 |  |  |  | 13 |
Liabilities |  |  | 3,714 |  |  |  | 3,714 |  |  |  | 45 |  |  |  | 45 |
Foreign currency swap agreements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  | 14,766 |  |  |  | 14,766 |  |  |  | 178 |  |  |  | 178 |
Liabilities |  |  | 33,481 |  |  |  | 33,481 |  |  |  | 403 |  |  |  | 403 |
Interest rate swap agreements: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  | 2,070 |  |  |  | 2,070 |  |  |  | 25 |  |  |  | 25 |
Liabilities |  |  | 1,320 |  |  |  | 1,320 |  |  |  | 16 |  |  |  | 16 |
Estimation of fair value The following methods and significant assumptions were used to estimate the fair value of each class of financial instrument for which it is practicable to estimate a value: Cash and cash equivalents, restricted cash, time deposits and short-term debt—The carrying amounts recognized in the balance sheets were determined to be reasonable estimates of their fair values due to their short maturity. Installment loans—The carrying amounts of floating-rate installment loans with no significant changes in credit risk and which could be repriced within a short-term period were determined to be reasonable estimates of their fair values. The carrying amounts of purchased loans were determined to be reasonable estimates of their fair values. For certain homogeneous categories of medium- and long-term fixed-rate loans, such as housing loans, the estimated fair values were calculated by discounting the future cash flows using the current interest rates charged by the Company and its subsidiaries for new loans made to borrowers with similar credit ratings and remaining maturities. Concerning above, if available, estimated fair values were based on quoted market prices or quotations provided by dealers. Investment in securities—For trading securities and available-for-sale securities other than specified bonds issued by SPEs and certain other mortgage-backed and asset-backed securities, the estimated fair values, which are also the carrying amounts recorded in the balance sheets, were generally based on quoted market prices or quotations provided by dealers. As for the specified bonds issued by the SPEs and certain other mortgage-backed and asset-backed securities included in available-for-sale securities, the Company and its subsidiaries estimated the fair value by discounting future cash flows (see Note 2). For held-to-maturity securities, the estimated fair values were based on quoted market prices, if available. If a quoted market price was not available, estimated fair values were determined using quoted market prices for similar securities or the carrying amounts (where carrying amounts were believed to approximate the estimated fair values). For certain investments funds included in other securities, the fair values are estimated based on net asset value per share. With regard to other securities other than the investment funds described above, the Company and its subsidiaries have not estimated the fair value, as it is not practicable to do so. Those other securities mainly consist of non-marketable equity securities and preferred capital shares. Because there were no quoted market prices for such other securities and each security has a different nature and characteristics, reasonable estimates of fair values could not be made without incurring excessive costs. Deposits—The carrying amounts of demand deposits recognized in the consolidated balance sheets were determined to be reasonable estimates of their fair values. The estimated fair values of time deposits were calculated by discounting the future cash flows. The current interest rates offered for the deposits with similar terms and remaining average maturities were used as the discount rates. Long-term debt—The carrying amounts of long-term debt with floating rates which could be repriced within short-term periods were determined to be reasonable estimates of their fair values. For medium-and long-term fixed-rate debt, the estimated fair values were calculated by discounting the future cash flows. The borrowing interest rates that were currently available to the Company and its subsidiaries offered by financial institutions for debt with similar terms and remaining average maturities were used as the discount rates. Concerning above, if available, estimated fair values were based on quoted market prices or quotations provided by dealers. Derivatives—For exchange-traded derivatives, fair value is based on quoted market prices. Fair value estimates for other derivatives generally reflect the estimated amounts that the Company and its subsidiaries would receive or pay to terminate the contracts at the reporting date, thereby taking into account the current unrealized gains or losses of open contracts. Discounted amounts of future cash flows using the current interest rate are used when estimating the fair values for most of the Company’s and its subsidiaries’ derivatives.

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- Definition This item represents the complete disclosure regarding the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the Company is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risk is are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15B -Subparagraph a, b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 3, 10, 14, 15 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44A, 44B Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32, 33, 34 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15C, 15D Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15A -Subparagraph a-d Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 17-22, 27, 28 + Details
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