REVENUE - Revenue by End Markets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net revenue	$ 1,717	$ 1,607	$ 3,473	$ 3,281
Pharmaceutical and Biopharmaceutical
Net revenue	612	589	1,251	1,191
Chemicals and Advanced Materials
Net revenue	378	335	784	708
Diagnostics and Clinical
Net revenue	250	241	489	484
Food
Net revenue	161	137	321	295
Academia and Government
Net revenue	159	146	305	287
Environmental and Forensics
Net revenue	$ 157	$ 159	$ 323	$ 316