SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

9 Months Ended

Jul. 31, 2025

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

New Accounting Pronouncements, Policy [Policy Text Block]

New Accounting Pronouncements

In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which expands reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment's profit or loss. The ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment's profit or loss in assessing segment performance and deciding how to allocate resources. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, or in fiscal 2025 for HEICO, and interim reporting periods within fiscal years beginning one year later. The adoption of this guidance will not affect the Company's consolidated results of operations, financial position or

cash flows and the Company is currently evaluating the effect the guidance will have on its disclosures.

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires disclosure of specific categories in the annual effective tax rate reconciliation table and further disaggregation for reconciling items that meet a quantitative threshold. The ASU also requires the disaggregation of income taxes paid by jurisdiction. ASU 2023-09 may be applied either prospectively or retrospectively and is effective for fiscal years beginning after December 15, 2024, or in fiscal 2026 for HEICO. Early adoption is permitted. The adoption of this guidance will not affect the Company's consolidated results of operations, financial position or cash flows and the Company is currently evaluating the effect the guidance will have on its disclosures.

In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses,” which requires more detailed disclosures about specified categories of expenses (including purchases of inventory, employee compensation, intangible asset amortization, and depreciation) included in certain expense captions presented on the face of the income statement (such as cost of sales and selling, general and administrative "SG&A" expenses). ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, or in fiscal 2028 for HEICO, and interim reporting periods within fiscal years beginning one year later. Early adoption is permitted. The adoption of this guidance will not affect the Company's consolidated results of operations, financial position or cash flows and the Company is currently evaluating the effect the guidance will have on its disclosures.

Accounting Standards Update 2023-07

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

New Accounting Pronouncements, Policy [Policy Text Block]

In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which expands reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment's profit or loss. The ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment's profit or loss in assessing segment performance and deciding how to allocate resources. Additionally, ASU 2023-07 requires all segment profit or loss and assets disclosures to be provided on an annual and interim basis. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, or in fiscal 2025 for HEICO, and interim reporting periods within fiscal years beginning one year later. The adoption of this guidance will not affect the Company's consolidated results of operations, financial position or

cash flows and the Company is currently evaluating the effect the guidance will have on its disclosures.

Accounting Standards Update 2023-09 [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

New Accounting Pronouncements, Policy [Policy Text Block]

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires disclosure of specific categories in the annual effective tax rate reconciliation table and further disaggregation for reconciling items that meet a quantitative threshold. The ASU also requires the disaggregation of income taxes paid by jurisdiction. ASU 2023-09 may be applied either prospectively or retrospectively and is effective for fiscal years beginning after December 15, 2024, or in fiscal 2026 for HEICO. Early adoption is permitted. The adoption of this guidance will not affect the Company's consolidated results of operations, financial position or cash flows and the Company is currently evaluating the effect the guidance will have on its disclosures.

Accounting Standards Update 2024-03 [Member]

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

New Accounting Pronouncements, Policy [Policy Text Block]

In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses,” which requires more detailed disclosures about specified categories of expenses (including purchases of inventory, employee compensation, intangible asset amortization, and depreciation) included in certain expense captions presented on the face of the income statement (such as cost of sales and selling, general and administrative "SG&A" expenses). ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, or in fiscal 2028 for HEICO, and interim reporting periods within fiscal years beginning one year later. Early adoption is permitted. The adoption of this guidance will not affect the Company's consolidated results of operations, financial position or cash flows and the Company is currently evaluating the effect the guidance will have on its disclosures