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Brokerage Commissions and Net Gains on Investment Securities (Tables) | 12 Months Ended
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Mar. 31, 2011
Investment Income | Brokerage commissions and net gains (losses) on investment securities in fiscal 2009, 2010 and 2011 consist of the following:
|  | Millions of yen |  |  | Millions of U.S. dollars |
|  | 2009 |  |  | 2010 |  |  | 2011 |  |  | 2011 |
Brokerage commissions |  | ¥ | 5,025 |  |  | ¥ | 3,418 |  |  | ¥ | 119 |  |  | $ | 1 |
Net gains (losses) on investment securities |  |  | (22,301 | ) |  |  | 14,863 |  |  |  | 16,656 |  |  |  | 201 |
Dividends income |  |  | 4,732 |  |  |  | 5,072 |  |  |  | 4,345 |  |  |  | 52 |
|  | ¥ | (12,544 | ) |  | ¥ | 23,353 |  |  | ¥ | 21,120 |  |  | $ | 254 |

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- Definition This item represents the disclosure for investment income derived from investments in debt and equity securities consisting of interest income earned from investments in debt securities and on cash and cash equivalents, dividend income from investments in equity securities, and income or expense derived from the amortization of investment related discounts or premiums, respectively. This item does not include realized or unrealized gains or losses on the sale or holding of investments in debt and equity securities required to be included in earnings for the period or for other than temporary losses related to investments in debt and equity securities which are included in realized losses in the period recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 13, 14, 15, 16 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14, 16 + Details
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