Goodwill and other intangible assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, amortization expense	$ 19,696	$ 18,823	$ 39,007	$ 32,210

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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