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SHARE-BASED COMPENSATION, Options Outstanding and Exercisable (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Number Outstanding (in shares) | 6,400 | 7,297 | 6,520 | 6,514
Outstanding Weighted Average Exercise Price (in dollars per share) | $ 23.19 | $ 18.58 | $ 14.23 | $ 13.07
Outstanding Weighted Average Contractual Life (in years) | 5 years |  |  |
Outstanding Aggregated Intrinsic Value (in dollars) | $ 328,976 |  |  |
Number Exercisable (in shares) | 4,357 |  |  |
Exercisable Weighted Average Exercise Price (in dollars per share) | $ 15.17 |  |  |
Exercisable Weighted Average Contractual Life (in years) | 3 years 6 months |  |  |
Exercisable Aggregate Intrinsic Value (in dollars) | $ 262,053 |  |  |
Heico Common Stock [Member] |  |  |  |
Number Outstanding (in shares) | 2,955 |  |  |
Outstanding Weighted Average Exercise Price (in dollars per share) | $ 23.48 |  |  |
Outstanding Weighted Average Contractual Life (in years) | 4 years 4 months 24 days |  |  |
Outstanding Aggregated Intrinsic Value (in dollars) | $ 178,327 |  |  |
Number Exercisable (in shares) | 2,197 |  |  |
Exercisable Weighted Average Exercise Price (in dollars per share) | $ 14.75 |  |  |
Exercisable Weighted Average Contractual Life (in years) | 3 years |  |  |
Exercisable Aggregate Intrinsic Value (in dollars) | $ 151,756 |  |  |
Common Class A [Member] |  |  |  |
Number Outstanding (in shares) | 3,445 |  |  |
Outstanding Weighted Average Exercise Price (in dollars per share) | $ 22.94 |  |  |
Outstanding Weighted Average Contractual Life (in years) | 5 years 6 months |  |  |
Outstanding Aggregated Intrinsic Value (in dollars) | $ 150,649 |  |  |
Number Exercisable (in shares) | 2,160 |  |  |
Exercisable Weighted Average Exercise Price (in dollars per share) | $ 15.59 |  |  |
Exercisable Weighted Average Contractual Life (in years) | 4 years 1 month 6 days |  |  |
Exercisable Aggregate Intrinsic Value (in dollars) | $ 110,297 |  |  |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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