REVENUE - Revenue by End Markets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Net revenue	$ 1,672	$ 1,718	$ 5,145	$ 4,999
Pharmaceutical and Biopharmaceutical
Net revenue	592	643	1,843	1,834
Chemicals and Advanced Materials
Net revenue	378	389	1,162	1,097
Diagnostics and Clinical
Net revenue	241	234	730	718
Food
Net revenue	151	151	472	446
Academia and Government
Net revenue	146	139	451	426
Environmental and Forensics
Net revenue	$ 164	$ 162	$ 487	$ 478