ACQUISITIONS ACQUISITIONS (Details 6) - FY 2015 Acquisition [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Oct. 31, 2016	Oct. 31, 2015
Business Acquisition [Line Items]
Pro Forma Revenue	$ 1,244,911	$ 1,228,987
Pro Forma Net income from consolidated operations	163,012	150,412
Pro Forma Net Income (Loss) Attributable to HEICO	$ 140,771	$ 130,539
Pro Forma Net Income (Loss) Per Share Attributable To Common Shareholders [Abstract]
Pro Forma Earnings Per Share, Basic	$ 2.11	$ 1.96
Pro Forma Earnings Per Share, Diluted	$ 2.08	$ 1.94

Business Acquisition Pro Forma Net Income (Loss) Per Share Attributable To Common Shareholders

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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- Definition

Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

+ References

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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