| Component: (Network and Table) | |
|---|---|
| Network | 2410408 - Disclosure - EMPLOYEE RETIREMENT PLANS EMPLOYEE RETIREMENT PLANS, Actual and Targeted Asset Allocations (Details) (http://www.heico.com/role/EmployeeRetirementPlansEmployeeRetirementPlansActualAndTargetedAssetAllocationsDetails) |
| Table | Schedule of Defined Benefit Plans Disclosures [Table] |
| Reporting Entity [Axis] | 0000046619 (http://www.sec.gov/CIK) |
| Business Acquisition [Axis] | Business Acquisition, Acquiree [Domain] |
| Defined Benefit Plan Disclosure [Line Items] | Period [Axis] | |||||||
|---|---|---|---|---|---|---|---|---|
2015-11-01 - 2016-10-31 | 2014-11-01 - 2015-10-31 | |||||||
| Defined Benefit Plan, Asset Categories [Axis] | Defined Benefit Plan, Asset Categories [Axis] | |||||||
| Fixed Income Securities [Member] | Equity Securities [Member] | Money Market Funds and Cash [Member] | Plan Asset Categories [Domain] | Fixed Income Securities [Member] | Equity Securities [Member] | Money Market Funds and Cash [Member] | Plan Asset Categories [Domain] | |
Defined Benefit Plan, Actual Plan Asset Allocations | ||||||||
Defined Benefit Plan, Target Plan Asset Allocations | ||||||||