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Goodwill and other intangible assets - Summary of Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands | Apr. 30, 2023 | Oct. 31, 2022
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Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | $ 803,235 | $ 731,065
Accumulated Amortization | 438,831 | 401,663
Net Book Value | 364,404 | 329,402
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 517,081 | 480,058
Accumulated Amortization | 273,771 | 250,798
Net Book Value | 243,310 | 229,260
Patent/technology costs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 176,103 | 157,549
Accumulated Amortization | 106,124 | 96,426
Net Book Value | 69,979 | 61,123
Trade name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 99,351 | 82,759
Accumulated Amortization | 48,975 | 44,707
Net Book Value | 50,376 | 38,052
Non-compete agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 10,559 | 10,253
Accumulated Amortization | 9,822 | 9,290
Net Book Value | 737 | 963
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 141 | 446
Accumulated Amortization | 139 | 442
Net Book Value | $ 2 | $ 4

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