REVENUE- Revenue by Region (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
Life Sciences and Applied Markets
Net revenue	968	896	2,001	1,872
Agilent CrossLab
Net revenue	387	353	768	712
Diagnostics and Genomics
Net revenue	362	358	704	697
Americas
Net revenue	676	659	1,363	1,296
Americas | Life Sciences and Applied Markets
Net revenue	310	321	642	638
Americas | Agilent CrossLab
Net revenue	154	137	308	269
Americas | Diagnostics and Genomics
Net revenue	212	201	413	389
Europe
Net revenue	433	423	889	874
Europe | Life Sciences and Applied Markets
Net revenue	225	216	484	468
Europe | Agilent CrossLab
Net revenue	103	97	201	195
Europe | Diagnostics and Genomics
Net revenue	105	110	204	211
Asia Pacific
Net revenue	608	525	1,221	1,111
Asia Pacific | Life Sciences and Applied Markets
Net revenue	433	359	875	766
Asia Pacific | Agilent CrossLab
Net revenue	130	119	259	248
Asia Pacific | Diagnostics and Genomics
Net revenue	$ 45	$ 47	$ 87	$ 97