INCOME TAXES	3 Months Ended
Jan. 31, 2017
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES The Company’s effective tax rate in the first quarter of fiscal 2017 decreased to 26.6% from 29.0% in the first quarter of fiscal 2016. The decrease principally reflects a $3.1 million discrete income tax benefit related to stock option exercises resulting from the adoption of ASU 2016-09 in the first quarter of fiscal 2017 (see Note 1, Summary of Significant Accounting Policies - New Accounting Pronouncements) and the favorable impact of higher tax-exempt unrealized gains in the cash surrender values of life insurance policies related to the HEICO Corporation Leadership Compensation Plan. These decreases were partially offset by the benefit recognized in the first quarter of fiscal 2016 from the retroactive and permanent extension of the U.S. federal R&D tax credit that resulted in the recognition of additional income tax credits for qualified R&D activities related to the last ten months of fiscal 2015.

INCOME TAXES

3 Months Ended

Jan. 31, 2017

INCOME TAXES

The Company’s effective tax rate in the first quarter of fiscal 2017 decreased to 26.6% from 29.0% in the first quarter of fiscal 2016. The decrease principally reflects a $3.1 million discrete income tax benefit related to stock option exercises resulting from the adoption of ASU 2016-09 in the first quarter of fiscal 2017 (see Note 1, Summary of Significant Accounting Policies - New Accounting Pronouncements) and the favorable impact of higher tax-exempt unrealized gains in the cash surrender values of life insurance policies related to the HEICO Corporation Leadership Compensation Plan. These decreases were partially offset by the benefit recognized in the first quarter of fiscal 2016 from the retroactive and permanent extension of the U.S. federal R&D tax credit that resulted in the recognition of additional income tax credits for qualified R&D activities related to the last ten months of fiscal 2015.