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ACQUISITIONS (Details Textuals)
3 Months Ended
Jan. 31, 2015
Aeroworks [Member]  
Business Acquisition [Line Items]  
Name of Acquired Entity Aeroworks International Holdings, B.V.
Effective Date of Acquisition Jan. 31, 2015
Percentage of Voting Interests Acquired 80.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
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= hei_AeroworksMember
Description of Acquired Entity Aeroworks, which is headquartered in The Netherlands and maintains significant production facilities in Thailand and Laos, is a manufacturer of both composite and metal parts used primarily in aircraft interior applications, including seating, galleys, lavatories, doors, and overhead bins.
Ownership Percentage by Noncontrolling Owners 20.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
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= hei_AeroworksMember
Contingent Consideration Arrangements, Description The total consideration includes an accrual representing the fair value of contingent consideration that the Company may be obligated to pay should Aeroworks meet certain earnings objectives during each of the first four years following the acquisition.
Harter [Member]  
Business Acquisition [Line Items]  
Name of Acquired Entity Harter Aerospace, LLC
Effective Date of Acquisition Jan. 31, 2015
Percentage of Voting Interests Acquired 80.10%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
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Description of Acquired Entity Harter is a globally recognized component and accessory maintenance, repair, and overhaul (MRO) station specializing in commercial aircraft accessories, including thrust reverse actuation systems and pneumatics, and electromechanical components.
Ownership Percentage by Noncontrolling Owners 19.90%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
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= hei_HarterMember