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Life Insurance Operations | 12 Months Ended
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Mar. 31, 2011
Life Insurance Operations | 23. Life Insurance Operations Life insurance premiums and related investment income in fiscal 2009, 2010 and 2011 consist of the following:
|  | Millions of yen |  |  | Millions of U.S. dollars |
|  | 2009 |  |  | 2010 |  |  | 2011 |  |  | 2011 |
Life insurance premiums |  | ¥ | 115,214 |  |  | ¥ | 104,133 |  |  | ¥ | 107,860 |  |  | $ | 1,297 |
Life insurance related investment income |  |  | 2,537 |  |  |  | 11,465 |  |  |  | 10,613 |  |  |  | 128 |
|  | ¥ | 117,751 |  |  | ¥ | 115,598 |  |  | ¥ | 118,473 |  |  | $ | 1,425 |
The benefits and expenses of life insurance operations, included in life insurance costs in the consolidated statements of income, are recognized so as to associate with earned premiums over the life of contracts. This association is accomplished by means of the provision for future policy benefits and the deferral and subsequent amortization of policy acquisition costs (principally commissions and certain other expenses relating to policy issuance and underwriting). These policy acquisition costs are amortized over the respective policy periods in proportion to premium revenue recognized. Amortization charged to income for fiscal 2009, 2010 and 2011 amounted to ¥11,771 million, ¥10,994 million and ¥9,661 million ($116 million), respectively.

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- Definition Information pertinent to an understanding of the types of traditional and nontraditional insurance and investment contracts sold and serviced, including the nature and amount of estimated guaranteed obligations pertaining to such contracts and the assumptions underlying such estimated amounts, hedging strategies, and sales inducements offered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 03-1 -Paragraph 38 + Details
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