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Goodwill and other intangible assets - Summary of Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands | Jan. 31, 2025 | Oct. 31, 2024
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Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | $ 1,263,139 | $ 1,286,588
Accumulated Amortization | 558,643 | 545,742
Net Book Value | 704,496 | 740,846
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 860,096 | 878,071
Accumulated Amortization | 347,178 | 339,756
Net Book Value | 512,918 | 538,315
Patent/technology costs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 229,069 | 232,371
Accumulated Amortization | 137,419 | 134,187
Net Book Value | 91,650 | 98,184
Trade name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 165,183 | 167,144
Accumulated Amortization | 65,306 | 62,887
Net Book Value | 99,877 | 104,257
Non-compete agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 8,361 | 8,502
Accumulated Amortization | 8,310 | 8,412
Net Book Value | 51 | 90
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Carrying Amount | 430 | 500
Accumulated Amortization | 430 | 500
Net Book Value | $ 0 | $ 0

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