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Basis of Presentation (Tables) | 9 Months Ended
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Oct. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Reclassifications | These expenses have been reclassified in the Condensed Consolidated Statements of Operations for the nine months ended October 31, 2014 and the three and nine months ended October 31, 2013 to conform to the current period presentation as follows:
|  | Nine Months Ended |  | Three Months Ended |  | Nine Months Ended
|  | October 31, 2014 |  | October 31, 2013 |  | October 31, 2013
Reclassifications within operating expenses: |  |  |  |  |  |
(Decrease) to general and administrative |  | $ | (10.9 | ) |  | $ | (7.4 | ) |  | $ | (27.5 | )
Increase to amortization of purchased intangibles |  | 10.9 |  |  | 7.4 |  |  | 27.5 |

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