CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) shares in Thousands, $ in Thousands	Jul. 31, 2021	Oct. 31, 2020
Current assets:
Cash and cash equivalents	$ 269,816	$ 406,852
Accounts receivable, net	209,001	210,433
Contract assets	62,400	60,429
Inventories, net	457,172	463,205
Prepaid expenses and other current assets	32,626	24,706
Total current assets	1,031,015	1,165,625
Property, plant and equipment, net	179,101	168,848
Goodwill	1,402,876	1,383,167
Intangible assets, net	545,800	579,041
Other assets	302,843	251,030
Total assets	3,461,635	3,547,711
Current liabilities:
Current maturities of long-term debt	1,493	1,045
Trade accounts payable	80,611	76,237
Accrued expenses and other current liabilities	179,515	162,232
Income taxes payable	598	1,647
Total current liabilities	262,217	241,161
Long-term debt, net of current maturities	385,380	738,786
Deferred income taxes	38,868	55,658
Other long-term liabilities	330,400	280,291
Total liabilities	1,016,865	1,315,896
Commitments and contingencies
Redeemable noncontrolling interests	224,684	221,208
Shareholders' equity:
Preferred Stock, $.01 par value per share; 10,000 shares authorized; none issued	0	0
Common Stock	542	542
Capital in excess of par value	315,601	299,930
Deferred compensation obligation	4,777	4,886
HEICO stock held by irrevocable trust	(4,777)	(4,886)
Accumulated other comprehensive loss	(3,265)	(9,149)
Retained earnings	1,873,239	1,688,045
Total HEICO shareholders' equity	2,186,929	1,980,177
Noncontrolling interests	33,157	30,430
Total shareholders' equity	2,220,086	2,010,607
Total liabilities and equity	$ 3,461,635	$ 3,547,711
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000	10,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	150,000	150,000
Common Stock, Shares, Issued	54,228	54,195
Common Stock, Shares, Outstanding	54,228	54,195
Class A Common Stock [Member]
Shareholders' equity:
Common Stock	$ 812	$ 809
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	150,000	150,000
Common Stock, Shares, Issued	81,155	80,923
Common Stock, Shares, Outstanding	81,155	80,923