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Stock-based Compensation Expense Stock-Based Compensation Expense - Additional Information (Details) (USD $) In Millions, except Share data, unless otherwise specified | 3 Months Ended | 0 Months Ended |
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Apr. 30, 2015 StockPlans | Apr. 30, 2014 | Oct. 31, 2014 | Jan. 14, 2014 | Jun. 10, 2015 | Jan. 31, 2015
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Share based compensation arrangements by share based payment awards, number of active plans (plan) | 2 adsk_Sharebasedcompensationarrangementsbysharebasedpaymentawardsnumberofactiveplans |  |  |  |  |  |  |
Share based compensation arrangement by share based payment award expired or terminated plans (plan) | 3 adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpiredOrTerminatedPlans |  |  |  |  |  |  |
Options granted in period | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod | [1] |  |  |  |  |  |
Nonvested awards, total compensation cost not yet recognized | $ 0.1 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized |  |  |  |  |  |  |
Nonvested options outstanding, weighted average remaining contractual term | 3 months |  |  |  |  |  |  |
Weighted average grant date fair value per share of stock options granted (in dollars per share) | $ 0.0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | [2] | $ 0.0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue | [2] |  |  |  |
Restricted Stock Units (RSUs) and Performance Shares |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Awards granted in period, weighted average grant date fair value (in usd per share) | $ 60.96 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember |  | $ 49.96 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember |  |  |  |  |
Awards vested in period, fair value | 43.1 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember |  | 29.4 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember |  |  |  |  |
Awards granted in period | 912,300 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember |  |  |  |  |  |  |
Awards, nonvested, number | 7,682,100 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember |  |  |  |  |  |  | 7,801,300 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Award vesting period | 3 years |  |  |  |  |  |  |
Nonvested awards, total compensation cost not yet recognized | 236.9 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |  |  |  |
Awards granted in period | 500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |  |  |  |
Allocated share-based compensation expense | 37.8 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  | 22.9 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |  |
Nonvested awards, total compensation cost not yet recognized, period for recognition | 1 year 8 months 19 days |  |  |  |  |  |  |
Awards, nonvested, number | 6,800,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember |  |  |  |  |  |  |
Performance Stock Unit |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Nonvested awards, total compensation cost not yet recognized | 23.1 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |  |  |  |
Awards granted in period | 400,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |  |  |  |
Allocated share-based compensation expense | $ 5.6 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  | $ 3.0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |  |
Nonvested awards, total compensation cost not yet recognized, period for recognition | 1 year 7 months 6 days |  |  |  |  |  |  |
Awards, nonvested, number | 900,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |  |  |  |  |  |
Performance Stock Unit | Share-based compensation award, tranche one |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
PSU Annual Vesting Percentage | 33.33%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheOneMember |  |  |  |  |  |  |
Performance Stock Unit | Share-based compensation award, tranche two |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
PSU Annual Vesting Percentage | 33.33%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheTwoMember |  |  |  |  |  |  |
Performance Stock Unit | Share-based compensation award, tranche three |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
PSU Annual Vesting Percentage | 33.33%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_VestingAxis = us-gaap_ShareBasedCompensationAwardTrancheThreeMember |  |  |  |  |  |  |
Employee Stock Plan 2012 |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Awards, number of additional shares authorized |  |  |  |  |  | 11,400,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |
Awards, number of shares authorized | 32,600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |  |  |  |  |  |
Stock issued during period, shares, restricted stock award, net of forfeitures |  |  |  |  | 26,600,000 us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |  |
Stock issued during period, shares, share-based compensation, forfeited |  |  |  |  | 6,000,000 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |  |
Share-based compensation shares granted to share issued |  |  |  |  | 1.79 adsk_ShareBasedCompensationSharesGrantedtoShareIssued / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |  |
Options granted in period |  |  |  |  | 23,700,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |  |
Award vesting period |  |  |  |  | 3 years |  |  |
Share based compensation arrangement by share based payment award options expiration term (in years) |  |  |  |  | 10 years |  |  |
Employee stock plan shares remaining available for issuance | 10,800,000 adsk_EmployeeStockPlanSharesRemainingAvailableForIssuance / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member |  |  |  |  |  |  |
Directors stock plan 2012 |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Awards, number of additional shares authorized | 900,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized / us-gaap_PlanNameAxis = adsk_DirectorsStockPlan2012Member |  |  |  |  |  |  |
Awards, number of shares authorized | 1,700,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = adsk_DirectorsStockPlan2012Member |  |  |  |  |  |  |
Share-based compensation shares granted to share issued |  |  |  |  | 2.11 adsk_ShareBasedCompensationSharesGrantedtoShareIssued / us-gaap_PlanNameAxis = adsk_DirectorsStockPlan2012Member |  |  |
Options granted in period |  |  |  |  | 600,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod / us-gaap_PlanNameAxis = adsk_DirectorsStockPlan2012Member |  |  |
Employee stock plan shares remaining available for issuance | 1,200,000 adsk_EmployeeStockPlanSharesRemainingAvailableForIssuance / us-gaap_PlanNameAxis = adsk_DirectorsStockPlan2012Member |  |  |  |  |  |  |
Directors stock plan 2012 | Minimum |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 1 year |  |  |
Directors stock plan 2012 | Maximum |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |  |  |
ESP Plan |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Employee stock plan shares remaining available for issuance | 39,600,000 adsk_EmployeeStockPlanSharesRemainingAvailableForIssuance / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |  |  |
Employee stock purchase plan maximum percentage of compensation to purchase shares by eligible participants | 15.00%adsk_EmployeeStockPurchasePlanMaximumPercentageOfCompensationToPurchaseSharesByEligibleParticipants / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |  |  |
Employee stock purchase plan minimum percentage of common stock fair value defined to purchase shares by eligible participants | 85.00%adsk_EmployeeStockPurchasePlanMinimumPercentageOfCommonStockFairValueDefinedToPurchaseSharesByEligibleParticipants / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |  |  |
Options, other increases (decreases) in period | 10,000,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |  |  |
Options, other increases (decreases) in period percentage calculation | 2.00%adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriodPercentageCalculation / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |  |  |
Shares issued under employee stock purchase plans | 1,100,000 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  | 1,100,000 us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |
Awards issued, share average price (in usd per share) | $ 36.91 adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAveragePrice / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  | $ 33.66 adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAveragePrice / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |
Weighted average grant date fair value per share of stock options granted (in dollars per share) | $ 15.99 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  | $ 14.26 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_PlanNameAxis = adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember |  |  |  |  |
Forecast | Employee Stock Plan 2012 |  |  |  |  |  |  |  |
Compensation Related Costs Share Based Payments Disclosure [Line Items] |  |  |  |  |  |  |  |
Awards, number of additional shares authorized |  |  |  |  |  |  | 12,500,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized / us-gaap_PlanNameAxis = adsk_EmployeeStockPlan2012Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |
[1] | Autodesk did not grant stock options in the three months ended April 30, 2015.
[2] | The weighted average grant date fair value per share of stock options granted is calculated, as of the stock option grant date, using the Black-Scholes Merton ("BSM") option pricing model. For the three months ended April 30, 2015 and 2014, Autodesk did not grant stock options.

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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