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Business and Summary of Significant Accounting Policies - New Accounting Standards (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Jan. 31, 2015
Long-term Taxes Payable |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 81.9 us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification / us-gaap_BalanceSheetLocationAxis = adsk_LongtermTaxesPayableMember
Long-term Deferred Tax Asset |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 81.9 us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification / us-gaap_BalanceSheetLocationAxis = adsk_LongtermDeferredTaxAssetMember

X
- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. + References No definition available. + Details
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