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Amounts Due under Non Cancelable Contracts (Detail) In Millions | Mar. 31, 2011 USD ($) | Mar. 31, 2011 JPY (¥)
--- | --- | ---
Commitments and Contingencies Disclosure [Line Items] |  |
2012 | $ 4 | ¥ 382
2013 | 1 | 60
Total | $ 5 | ¥ 442

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