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Investment in Operating Leases (Detail) In Millions | Mar. 31, 2011 USD ($) | Mar. 31, 2011 JPY (¥) | Mar. 31, 2010 JPY (¥) | Mar. 31, 2011 Transportation equipment USD ($) | Mar. 31, 2011 Transportation equipment JPY (¥) | Mar. 31, 2010 Transportation equipment JPY (¥) | Mar. 31, 2011 Measuring and information-related equipment USD ($) | Mar. 31, 2011 Measuring and information-related equipment JPY (¥) | Mar. 31, 2010 Measuring and information-related equipment JPY (¥) | Mar. 31, 2011 Real Estate USD ($) | Mar. 31, 2011 Real Estate JPY (¥) | Mar. 31, 2010 Real Estate JPY (¥) | Mar. 31, 2011 Other USD ($) | Mar. 31, 2011 Other JPY (¥) | Mar. 31, 2010 Other JPY (¥)
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Property Subject to or Available for Operating Lease [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property Subject to or Available for Operating Lease, Gross | $ 19,932 | ¥ 1,657,367 | ¥ 1,595,721 | $ 7,516 | ¥ 624,958 | ¥ 580,009 | $ 2,120 | ¥ 176,304 | ¥ 170,047 | $ 10,066 | ¥ 836,953 | ¥ 826,398 | $ 230 | ¥ 19,152 | ¥ 19,267
Accumulated depreciation | (4,843) | (402,697) | (399,747) |  |  |  |  |  |  |  |  |  |  |  |
Net | 15,089 | 1,254,670 | 1,195,974 |  |  |  |  |  |  |  |  |  |  |  |
Accrued rental receivables | 188 | 15,625 | 17,249 |  |  |  |  |  |  |  |  |  |  |  |
Property Subject to or Available for Operating Lease, Net, Total | $ 15,277 | ¥ 1,270,295 | ¥ 1,213,223 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 23 -Subparagraph b(i) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph a + Details
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- Definition The amount of lessor property subject to or available for lease, at cost adjusted for any previously recognized impairment charges, by major property class, as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 23 -Subparagraph b(i) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph a + Details
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- Definition The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 23 -Subparagraph b(i) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 19 -Subparagraph a + Details
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