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Income Taxes (Details)
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3 Months Ended | 6 Months Ended |
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Jul. 31, 2013
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Jul. 31, 2013
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| Income Taxes | ||
| Maximum effective tax rate (as a percent) | 1.00% | 1.00% |
| X | ||||||||||
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- Definition
The maximum ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. No definition available.
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| X | ||||||||||
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- Details
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