XML 67 R51.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Business and Summary of Significant Accounting Policies - New Accounting Standards (Details) - Scenario, Forecast - Accounting Standards Update 2014-09 $ in Millions | 12 Months Ended
--- | ---
Jan. 31, 2019 USD ($)
Minimum | Deferred Revenue |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Expected impact of new accounting pronouncement | $ (80)
Minimum | Capitalized Sales Commission Costs |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Expected impact of new accounting pronouncement | (102)
Maximum | Deferred Revenue |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Expected impact of new accounting pronouncement | (100)
Maximum | Capitalized Sales Commission Costs |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Expected impact of new accounting pronouncement | $ (112)

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
Name: | us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=adsk_DeferredRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=adsk_CapitalizedSalesCommissionCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |