Goodwill and Other Intangible Assets - Summary of Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands	Apr. 30, 2021	Oct. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Carrying  Amount	$ 728,107	$ 722,674
Accumulated Amortization	344,251	315,088
Net Book  Value	383,856	407,586
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Carrying  Amount	486,696	483,568
Accumulated Amortization	212,301	193,617
Net Book  Value	274,395	289,951
Patent/technology costs
Finite-Lived Intangible Assets [Line Items]
Carrying  Amount	155,346	153,555
Accumulated Amortization	84,173	76,934
Net Book  Value	71,173	76,621
Trade name
Finite-Lived Intangible Assets [Line Items]
Carrying  Amount	74,666	74,240
Accumulated Amortization	37,501	34,693
Net Book  Value	37,165	39,547
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Carrying  Amount	10,005	9,908
Accumulated Amortization	8,884	8,444
Net Book  Value	1,121	1,464
Other
Finite-Lived Intangible Assets [Line Items]
Carrying  Amount	1,394	1,403
Accumulated Amortization	1,392	1,400
Net Book  Value	$ 2	$ 3