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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME - UNAUDITED - USD ($) $ in Thousands | Total | Redeemable Noncontrolling Interests [Member] | Common Stock [Member] | Common Stock [Member] Class A Common Stock [Member] | Capital In Excess Of Par Value [Member] | Deferred Compensation Obligation [Member] | HEICO Stock Held By Irrevocable Trust [Member] | AOCI Attributable to Parent [Member] | Retained Earnings [Member] | Noncontrolling Interest [Member] | Total Shareholders Equity [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Oct. 31, 2021 |  |  | $ 543 | $ 812 | $ 320,747 | $ 5,297 | $ (5,297) | $ (8,552) | $ 1,949,521 | $ 33,868 | $ 2,296,939
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | $ 149,929 |  |  |  |  |  |  | (22,002) | 171,931 |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 14,440 | $ 9,262 |  |  |  |  |  |  |  | 5,178 |
Comprehensive income | 164,369 |  |  |  |  |  |  |  |  |  | 155,107
Cash dividends |  |  |  |  |  |  |  |  | (12,227) |  | (12,227)
Issuance of common stock to Savings and Investment Plan |  |  |  |  | 7,739 |  |  |  |  |  | 7,739
Share-based compensation expense |  |  |  |  | 6,855 |  |  |  |  |  | 6,855
Proceeds from stock option exercises |  |  | 3 | 3 |  |  |  |  |  |  | 1,610
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital |  |  |  |  | 1,604 |  |  |  |  |  |
Stock Redeemed or Called During Period, Value |  |  | (1) | (1) | (23,690) |  |  |  |  |  | (23,692)
Distributions to noncontrolling interests |  | (9,968) |  |  |  |  |  |  |  | (608) | (608)
Adjustments to redemption amount of redeemable noncontrolling interests |  | 9,047 |  |  |  |  |  |  | (9,047) |  | (9,047)
Adjustments to Additional Paid in Capital, Other |  |  |  |  | (2,202) |  |  |  |  |  | (2,202)
Ending Balance at Apr. 30, 2022 |  |  | 545 | 814 | 311,053 | 5,297 | (5,297) | (30,554) | 2,100,178 | 38,438 | 2,420,474
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2021 |  | 252,587 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 14,440 | 9,262 |  |  |  |  |  |  |  | 5,178 |
Noncontrolling Interest, Increase from Business Combination | 39,235 |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests |  | (9,968) |  |  |  |  |  |  |  | (608) | (608)
Adjustments to redemption amount of redeemable noncontrolling interests |  | 9,047 |  |  |  |  |  |  | (9,047) |  | (9,047)
Temporary Equity, Other Changes | 3,764 |  |  |  |  |  |  |  |  |  |
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2022 |  | 303,927 |  |  |  |  |  |  |  |  |
Beginning Balance at Jan. 31, 2022 |  |  | 545 | 814 | 302,104 | 5,297 | (5,297) | (16,962) | 2,018,990 | 36,565 | 2,342,056
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | 71,418 |  |  |  |  |  |  | (13,592) | 85,010 |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 7,439 | 5,121 |  |  |  |  |  |  |  | 2,318 |
Comprehensive income | 78,857 |  |  |  |  |  |  |  |  |  | 73,736
Issuance of common stock to Savings and Investment Plan |  |  |  |  | 6,069 |  |  |  |  |  | 6,069
Share-based compensation expense |  |  |  |  | 3,241 |  |  |  |  |  | 3,241
Proceeds from stock option exercises |  |  |  |  |  |  |  |  |  |  | 841
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital |  |  |  |  | 841 |  |  |  |  |  |
Stock Redeemed or Called During Period, Value |  |  |  |  | (69) |  |  |  |  |  | (69)
Distributions to noncontrolling interests |  | (4,085) |  |  |  |  |  |  |  | (445) | (445)
Adjustments to redemption amount of redeemable noncontrolling interests |  | 3,822 |  |  |  |  |  |  | (3,822) |  | (3,822)
Adjustments to Additional Paid in Capital, Other |  |  |  |  | (1,133) |  |  |  |  |  | (1,133)
Ending Balance at Apr. 30, 2022 |  |  | 545 | 814 | 311,053 | 5,297 | (5,297) | (30,554) | 2,100,178 | 38,438 | 2,420,474
Starting Balance, Redeemable Noncontrolling Interests at Jan. 31, 2022 |  | 258,289 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 7,439 | 5,121 |  |  |  |  |  |  |  | 2,318 |
Noncontrolling Interest, Increase from Business Combination | 39,063 |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests |  | (4,085) |  |  |  |  |  |  |  | (445) | (445)
Adjustments to redemption amount of redeemable noncontrolling interests |  | 3,822 |  |  |  |  |  |  | (3,822) |  | (3,822)
Temporary Equity, Other Changes | 1,717 |  |  |  |  |  |  |  |  |  |
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2022 |  | 303,927 |  |  |  |  |  |  |  |  |
Beginning Balance at Oct. 31, 2022 | 2,648,306 |  | 545 | 821 | 397,337 | 5,297 | (5,297) | (46,499) | 2,253,932 | 42,170 | 2,648,306
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | 227,020 |  |  |  |  |  |  | 28,873 | 198,147 |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 21,452 | 15,356 |  |  |  |  |  |  |  | 6,096 |
Comprehensive income | 248,472 |  |  |  |  |  |  |  |  |  | 233,116
Cash dividends |  |  |  |  |  |  |  |  | (13,668) |  | (13,668)
Issuance of common stock to Savings and Investment Plan |  |  |  |  | 7,760 |  |  |  |  |  | 7,760
Share-based compensation expense |  |  |  |  | 6,055 |  |  |  |  |  | 6,055
Proceeds from stock option exercises |  |  | 2 | 2 |  |  |  |  |  |  | 4,074
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital |  |  |  |  | 4,070 |  |  |  |  |  |
Stock Redeemed or Called During Period, Value |  |  |  |  | (14,811) |  |  |  |  |  | (14,811)
Distributions to noncontrolling interests |  | (16,161) |  |  |  |  |  |  |  | (6,489) | (6,489)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  | (1,059) |  |  | (1,674) |  |  |  |  |  | (1,674)
Adjustments to redemption amount of redeemable noncontrolling interests |  | 3,103 |  |  |  |  |  |  | (3,103) |  | (3,103)
Value of Stock Issued During Period for Deferred Compensation Obligation |  |  |  |  |  | 874 |  |  |  |  |
Value of Stock Held During Period in Irrevocable Trust for Deferred Compensation Obligation |  |  |  |  |  |  | (874) |  |  |  |
Adjustments to Additional Paid in Capital, Other |  |  |  |  | 254 |  |  |  |  |  |
Stockholders' Equity, Other |  |  |  |  |  |  |  |  | (153) |  | 101
Ending Balance at Apr. 30, 2023 | 2,859,667 |  | 547 | 823 | 398,991 | 6,171 | (6,171) | (17,626) | 2,435,155 | 41,777 | 2,859,667
Starting Balance, Redeemable Noncontrolling Interests at Oct. 31, 2022 | 327,601 | 327,601 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 21,452 | 15,356 |  |  |  |  |  |  |  | 6,096 |
Noncontrolling Interest, Increase from Business Combination | 14,642 |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests |  | (16,161) |  |  |  |  |  |  |  | (6,489) | (6,489)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |  | (1,059) |  |  | (1,674) |  |  |  |  |  | (1,674)
Adjustments to redemption amount of redeemable noncontrolling interests |  | 3,103 |  |  |  |  |  |  | (3,103) |  | (3,103)
Temporary Equity, Other Changes | 2,351 |  |  |  |  |  |  |  |  |  |
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2023 | 345,833 | 345,833 |  |  |  |  |  |  |  |  |
Beginning Balance at Jan. 31, 2023 |  |  | 547 | 822 | 388,603 | 6,171 | (6,171) | (19,358) | 2,328,523 | 45,037 | 2,744,174
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | 106,852 |  |  |  |  |  |  | 1,732 | 105,120 |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 10,215 | 7,376 |  |  |  |  |  |  |  | 2,839 |
Comprehensive income | 117,067 |  |  |  |  |  |  |  |  |  | 109,691
Issuance of common stock to Savings and Investment Plan |  |  |  |  | 5,796 |  |  |  |  |  | 5,796
Share-based compensation expense |  |  |  |  | 3,243 |  |  |  |  |  | 3,243
Proceeds from stock option exercises |  |  |  | 1 |  |  |  |  |  |  | 1,229
Proceeds from stock option exercises, Adjustment to Additional Paid in Capital |  |  |  |  | 1,228 |  |  |  |  |  |
Stock Redeemed or Called During Period, Value |  |  |  |  | (6) |  |  |  |  |  | (6)
Distributions to noncontrolling interests |  | (5,260) |  |  |  |  |  |  |  | (6,099) | (6,099)
Adjustments to redemption amount of redeemable noncontrolling interests |  | (1,513) |  |  |  |  |  |  | 1,513 |  | 1,513
Adjustments to Additional Paid in Capital, Other |  |  |  |  | 127 |  |  |  |  |  |
Stockholders' Equity, Other |  |  |  |  |  |  |  |  | (1) |  | 126
Ending Balance at Apr. 30, 2023 | 2,859,667 |  | $ 547 | $ 823 | $ 398,991 | $ 6,171 | $ (6,171) | $ (17,626) | 2,435,155 | 41,777 | 2,859,667
Starting Balance, Redeemable Noncontrolling Interests at Jan. 31, 2023 |  | 340,287 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Temporary Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | 10,215 | 7,376 |  |  |  |  |  |  |  | 2,839 |
Noncontrolling Interest, Increase from Business Combination | 2,592 |  |  |  |  |  |  |  |  |  |
Distributions to noncontrolling interests |  | (5,260) |  |  |  |  |  |  |  | $ (6,099) | (6,099)
Adjustments to redemption amount of redeemable noncontrolling interests |  | (1,513) |  |  |  |  |  |  | $ 1,513 |  | $ 1,513
Temporary Equity, Other Changes | 2,351 |  |  |  |  |  |  |  |  |  |
Ending Balance, Redeemable Noncontrolling Interests at Apr. 30, 2023 | $ 345,833 | $ 345,833 |  |  |  |  |  |  |  |  |

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