REVENUE - Revenue by End Markets (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Net revenue	$ 1,578	$ 1,672	$ 4,809	$ 5,145
Pharmaceutical and Biopharmaceutical
Net revenue	540	592	1,647	1,843
Chemicals and Advanced Materials
Net revenue	356	378	1,110	1,162
Diagnostics and Clinical
Net revenue	242	241	709	730
Food
Net revenue	144	151	440	472
Academia and Government
Net revenue	128	146	417	451
Environmental and Forensics
Net revenue	$ 168	$ 164	$ 486	$ 487

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details