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Concentration of Credit Risk Additional Information (Details) (USD $)
 3 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Concentration Risk [Line Items]    
Unsecured revolving credit facility 400,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity  
Accounts Receivable    
Concentration Risk [Line Items]    
Percentage of gross accounts receivable accounted for by Tech Data 21.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember		 22.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
Tech Data    
Concentration Risk [Line Items]    
Total sales to the distributors Tech Data Corporation and its global affiliates ("Tech Data") relative to Autodesk's consolidated net revenue 26.00%adsk_PercentageOfNetSales
/ us-gaap_StatementEquityComponentsAxis
= adsk_TechDataMember		 26.00%adsk_PercentageOfNetSales
/ us-gaap_StatementEquityComponentsAxis
= adsk_TechDataMember