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v2.4.1.9

Segments - Operations by geographic area (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2015 | Oct. 31, 2014 | Jul. 31, 2014 | Apr. 30, 2014 | Jan. 31, 2014 | Oct. 31, 2013 | Jul. 31, 2013 | Apr. 30, 2013 | Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue | $ 664.6 us-gaap_SalesRevenueNet |  | $ 618.0 us-gaap_SalesRevenueNet | $ 637.1 us-gaap_SalesRevenueNet | $ 592.5 us-gaap_SalesRevenueNet | $ 586.6 us-gaap_SalesRevenueNet |  | $ 555.2 us-gaap_SalesRevenueNet | $ 561.7 us-gaap_SalesRevenueNet | $ 570.4 us-gaap_SalesRevenueNet | $ 2,512.2 us-gaap_SalesRevenueNet |  | $ 2,273.9 us-gaap_SalesRevenueNet |  | $ 2,312.2 us-gaap_SalesRevenueNet
Total long-lived assets | 159.2 us-gaap_NoncurrentAssets | [1] |  |  |  | 130.3 us-gaap_NoncurrentAssets | [1] |  |  |  | 159.2 us-gaap_NoncurrentAssets | [1] | 130.3 us-gaap_NoncurrentAssets | [1] |
Americas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | 898.0 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  | 818.9 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  | 836.2 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Total long-lived assets | 111.9 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |  |  |  | 91.9 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |  |  |  | 111.9 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] | 91.9 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |
Americas | U.S. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | 736.4 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  | 672.3 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  | 672.1 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Total long-lived assets | 108.8 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |  |  |  | 89.0 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |  |  |  | 108.8 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] | 89.0 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = country_US / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |
Americas | Other Americas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | 161.6 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  | 146.6 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |  | 164.1 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember
Total long-lived assets | 3.1 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |  |  |  | 2.9 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |  |  |  | 3.1 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] | 2.9 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAmericasMember / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | [1] |
Europe Middle East And Africa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | 980.0 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = adsk_EuropeMiddleEastAndAfricaMember |  | 851.8 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = adsk_EuropeMiddleEastAndAfricaMember |  | 868.5 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = adsk_EuropeMiddleEastAndAfricaMember
Europe, Middle East, and Africa | Europe Middle East And Africa [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total long-lived assets | 25.0 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_EuropeMiddleEastAndAfricaMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | [1] |  |  |  | 27.2 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_EuropeMiddleEastAndAfricaMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | [1] |  |  |  | 25.0 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_EuropeMiddleEastAndAfricaMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | [1] | 27.2 us-gaap_NoncurrentAssets / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_EuropeMiddleEastAndAfricaMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | [1] |
Asia Pacific |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | 634.2 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember |  | 603.2 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember |  | 607.5 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
Total long-lived assets | 22.3 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember | [1] |  |  |  | 11.2 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember | [1] |  |  |  | 22.3 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember | [1] | 11.2 us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember | [1] |
Asia Pacific | Japan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | 269.0 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = country_JP / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember |  | 274.5 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = country_JP / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember |  | 278.3 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = country_JP / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
Asia Pacific | Other Asia Pacific |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  |  | $ 365.2 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAsiaPacificMember / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember |  | $ 328.7 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAsiaPacificMember / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember |  | $ 329.2 us-gaap_SalesRevenueNet / adsk_RegionReportingInformationBySecondaryRegionAxis = adsk_OtherAsiaPacificMember / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
[1] | Long-lived assets exclude deferred tax assets, marketable securities, goodwill, and other intangible assets. Prior period amounts have been updated to conform to the current period's presentation.

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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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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