| Component: (Network and Table) | |
|---|---|
| Network | 2401406 - Disclosure - Business and Summary of Significant Accounting Policies Computer Equipment, Software, Furniture, Leasehold Improvements and the Related Accumulated Depriciaation (Details) (http://www.usa.autodesk.com/role/BusinessAndSummaryOfSignificantAccountingPoliciesComputerEquipmentSoftwareFurnitureLeaseholdImprovementsAndRelatedAccumulatedDepriciaationDetails) |
| Table | Schedule of Property, Plant and Equipment [Table] |
| Reporting Entity [Axis] | 0000769397 (http://www.sec.gov/CIK) |
| Legal Entity [Axis] | Entity [Domain] |
| Property, Plant and Equipment [Line Items] | Period [Axis] | |
|---|---|---|
2012-01-31 | 2011-01-31 | |
Computer software, at cost | 133,500,000 | 129,400,000 |
Computer hardware, at cost | 153,300,000 | 123,700,000 |
Leasehold improvements, land and buildings, at cost | 139,500,000 | 121,300,000 |
Furniture and equipment, at cost | 47,700,000 | 43,600,000 |
Property, Plant and Equipment, Gross | 474,000,000 | 418,000,000 |
Less: Accumulated depreciation | (369,500,000) | (333,500,000) |
Computer software, hardware, leasehold improvements, furniture and equipment, net | 104,500,000 | 84,500,000 |