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Other Intangible Assets and Related Accumulated Amortization (Details) (USD $) In Millions, unless otherwise specified | Oct. 31, 2014 | Jan. 31, 2014
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Finite-Lived Intangible Assets [Line Items] |  |  |  |
Other intangible assets, gross | $ 890.0 |  | $ 730.5 |
Less: Accumulated amortization | (696.2) |  | (626.2) |
Other intangible assets, net | 193.8 |  | 104.3 |
Developed technologies, at cost |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Other intangible assets, gross | 537.1 |  | 462.4 |
Customer relationships, trade names, patents, and user list, at cost |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Other intangible assets, gross | $ 352.9 | [1] | $ 268.1 | [1]
[1] | Included in “Other assets” in the accompanying Condensed Consolidated Balance Sheets. Customer relationships and trade names include the effects of foreign currency translation.

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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