| Component: (Network and Table) | |
|---|---|
| Network | 4016 - Disclosure - Summary of Significant Accounting Policies (Details 7) (http://www.aarcorp.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails7) |
| Table | Schedule of Property, Plant and Equipment [Table] |
| Reporting Entity [Axis] | 0000001750 (http://www.sec.gov/CIK) |
| Period [Axis] | 2011-06-01 - 2012-05-31 |
| Property, Plant and Equipment | Property, Plant and Equipment by Type [Axis] | ||||
|---|---|---|---|---|---|
| Building and Building Improvements [Member] | Equipment [Member] | Furniture and Fixtures [Member] | Software [Member] | Air Transportation Equipment [Member] | |
Minimum useful life (in years) | 10 | 3 | 3 | 3 | 7 |
Maximum useful life (in years) | 40 | 10 | 10 | 10 | 20 |