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v2.4.1.9

- Income Taxes Differences between the U.S. statutory rate and the aggregate income tax provision (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
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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
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income tax provision at U.S. Federal statutory rate |  |  |  |  |  |  |  |  | $ 29.0 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 98.0 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | $ 108.5 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income tax benefit, net of the U.S. Federal benefit |  |  |  |  |  |  |  |  | (4.0)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (2.9)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (1.7)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Foreign income taxed at rates different from the U.S. statutory rate |  |  |  |  |  |  |  |  | (40.0)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | (57.1)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | (54.5)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
U.S. valuation allowance |  |  |  |  |  |  |  |  | 2.9 us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 2.1 us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 1.7 us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Tax effect of non-deductible stock-based compensation |  |  |  |  |  |  |  |  | 15.7 us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | 10.8 us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost | 21.1 us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
Research and development tax credit benefit |  |  |  |  |  |  |  |  | (7.2)us-gaap_IncomeTaxReconciliationTaxCreditsResearch | (8.8)us-gaap_IncomeTaxReconciliationTaxCreditsResearch | (7.0)us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Tax (benefit) expense from closure of income tax audits and changes in uncertain tax positions |  |  |  |  |  |  |  |  | (0.7)adsk_IncomeTaxReconciliationUncertainTaxPositions | 3.6 adsk_IncomeTaxReconciliationUncertainTaxPositions | (2.8)adsk_IncomeTaxReconciliationUncertainTaxPositions
Tax effect of officer compensation in excess of $1.0 million |  |  |  |  |  |  |  |  | 2.4 adsk_IncomeTaxReconciliationOfficerCompensation | 3.0 adsk_IncomeTaxReconciliationOfficerCompensation | 1.8 adsk_IncomeTaxReconciliationOfficerCompensation
U.S. Manufacturer's deduction |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities | (0.1)us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities | (4.9)us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities
Other |  |  |  |  |  |  |  |  | 3.1 us-gaap_IncomeTaxReconciliationOtherAdjustments | 2.5 us-gaap_IncomeTaxReconciliationOtherAdjustments | 0.4 us-gaap_IncomeTaxReconciliationOtherAdjustments
Income tax expense | $ (18.6)us-gaap_IncomeTaxExpenseBenefit | $ 0.9 us-gaap_IncomeTaxExpenseBenefit | $ 11.6 us-gaap_IncomeTaxExpenseBenefit | $ 7.3 us-gaap_IncomeTaxExpenseBenefit | $ 2.4 us-gaap_IncomeTaxExpenseBenefit | $ 11.6 us-gaap_IncomeTaxExpenseBenefit | $ 20.1 us-gaap_IncomeTaxExpenseBenefit | $ 17.0 us-gaap_IncomeTaxExpenseBenefit | $ 1.2 us-gaap_IncomeTaxExpenseBenefit | $ 51.1 us-gaap_IncomeTaxExpenseBenefit | $ 62.6 us-gaap_IncomeTaxExpenseBenefit

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- Definition Income Tax Reconciliation, Officer Compensation + References No definition available. + Details
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- Definition The portion of the difference between total income tax expense (benefit) as reported in the Income Statement and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to closure of income tax audits and changes in uncertain tax positions. + References No definition available. + Details
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- Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32123-109318 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1 -Article 4 + Details
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1 -Article 4 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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