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Segments Information Regarding Operations by Geographic Area (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2014 | Oct. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | $ 618.0 | $ 555.2 | $ 1,847.6 | $ 1,687.3
Other Asia Pacific |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue |  |  | 265.5 | 245.2
Americas |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | 230.8 | 208.3 | 659.8 | 612.1
Americas | U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | 189.3 | 171.3 | 543.4 | 502.3
Americas | Other Americas |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | 41.5 | 37.0 | 116.4 | 109.8
Europe, Middle East and Africa |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | 238.2 | 204.4 | 707.2 | 622.4
Asia Pacific |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | 149.0 | 142.5 | 480.6 | 452.8
Asia Pacific | Japan |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | 58.0 | 61.9 | 215.1 | 207.6
Asia Pacific | Other Asia Pacific |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue | $ 91.0 | $ 80.6 |  |

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Details
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