XML 91 R74.htm IDEA: XBRL DOCUMENT
v3.24.4

GOODWILL AND OTHER INTANGIBLE ASSETS, Weighted Average Intangible Assets Useful Life (Details) | 12 Months Ended
--- | ---
Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022
FY2024 Acquisitions |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 11 years |  |
FY2024 Acquisitions | Customer Relationships [Member] |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 11 years |  |
FY2024 Acquisitions | Intellectual Property [Member] |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 11 years |  |
FY2023 Acquisitions |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  | 13 years |
FY2023 Acquisitions | Customer Relationships [Member] |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  | 13 years |
FY2023 Acquisitions | Intellectual Property [Member] |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  | 14 years |
FY2022 Acquisitions |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 14 years
FY2022 Acquisitions | Customer Relationships [Member] |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 15 years
FY2022 Acquisitions | Intellectual Property [Member] |  |  |
Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 13 years

X
- Definition Schedule Of Acquired Finite and Indefinite Lived Intangible Assets By Major Class [Line Items] + References No definition available. + Details
Name: | hei_ScheduleOfAcquiredFiniteAndIndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix: | hei_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=hei_FY2024AcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_IntellectualPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=hei_FY2023AcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=hei_FY2022AcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |