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Net Operating Loss Carryforwards Expire Date (Detail) In Millions	Mar. 31, 2011 USD ($)	Mar. 31, 2011 JPY (¥)
Operating Loss Carryforwards [Line Items]
2012	$ 113	¥ 9,394
2013	160	13,302
2014	72	6,013
2015	263	21,856
2016	273	22,661
Thereafter	784	65,202
Total	$ 1,665	¥ 138,428

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- Definition

The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 48
-Subparagraph a

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