INCOME TAXES	9 Months Ended
Jul. 31, 2016
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES The Company's effective tax rate in the first nine months of fiscal 2016 increased to 30.9% from 30.6% in the first nine months of fiscal 2015. The increase principally reflects the benefits recognized in the first nine months of fiscal 2015 from a prior year tax return amendment for additional foreign tax credits related to R&D activities at one of the Company's foreign subsidiaries and higher net income attributable to noncontrolling interests in subsidiaries structured as partnerships. These increases were partially offset by the benefits recognized in the first nine months of fiscal 2016 of a larger income tax credit for qualified R&D activities resulting from the permanent extension of the U.S. federal R&D tax credit in December 2015 and a higher deduction for manufacturing activities mainly resulting from a fiscal 2016 acquisition. The Company's effective tax rate in the third quarter of fiscal 2016 decreased to 30.5% from 32.0% in the third quarter of fiscal 2015. The decrease principally reflects the previously mentioned higher deduction for manufacturing activities and larger income tax credit for qualified R&D activities as well as the favorable impact of higher tax-exempt unrealized gains in the cash surrender value of life insurance policies related to the HEICO Leadership Compensation Plan. These decreases were partially offset by the aforementioned benefit of additional foreign tax credits related to a prior year tax return amendment and higher net income attributable to noncontrolling interests in subsidiaries structured as partnerships recognized in the first nine months of fiscal 2015.

INCOME TAXES

9 Months Ended

Jul. 31, 2016

INCOME TAXES

The Company's effective tax rate in the first nine months of fiscal 2016 increased to 30.9% from 30.6% in the first nine months of fiscal 2015. The increase principally reflects the benefits recognized in the first nine months of fiscal 2015 from a prior year tax return amendment for additional foreign tax credits related to R&D activities at one of the Company's foreign subsidiaries and higher net income attributable to noncontrolling interests in subsidiaries structured as partnerships. These increases were partially offset by the benefits recognized in the first nine months of fiscal 2016 of a larger income tax credit for qualified R&D activities resulting from the permanent extension of the U.S. federal R&D tax credit in December 2015 and a higher deduction for manufacturing activities mainly resulting from a fiscal 2016 acquisition.

The Company's effective tax rate in the third quarter of fiscal 2016 decreased to 30.5% from 32.0% in the third quarter of fiscal 2015. The decrease principally reflects the previously mentioned higher deduction for manufacturing activities and larger income tax credit for qualified R&D activities as well as the favorable impact of higher tax-exempt unrealized gains in the cash surrender value of life insurance policies related to the HEICO Leadership Compensation Plan. These decreases were partially offset by the aforementioned benefit of additional foreign tax credits related to a prior year tax return amendment and higher net income attributable to noncontrolling interests in subsidiaries structured as partnerships recognized in the first nine months of fiscal 2015.