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2402403 - Disclosure - Financial Instruments - Reconciliation of the Change in Level 3 Items (Details)
(http://www.usa.autodesk.com/role/FinancialInstrumentsReconciliationOfChangeInLevel3ItemsDetails)
TableFair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000769397 (http://www.sec.gov/CIK)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]Period [Axis]
2016-02-01 - 2017-01-31
Fair Value by Asset Class [Axis]
Derivative ContractsConvertible Debt SecuritiesFair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, by Asset Class [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
 
 
 
Beginning Balance
300,000  
3,400,000  
3,700,000  
Purchases
1,100,000  
4,000,000  
5,100,000  
Settlements
(700,000) 
(1,700,000) 
(2,400,000) 
Gains (losses) included in earnings
600,000  
100,000  
700,000  
Gains included in OCI
0  
(200,000) 
(200,000) 
Ending Balance
1,300,000  
 
5,600,000  
 
6,900,000