SEGMENT INFORMATION - Profitability (Details) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)	Apr. 30, 2023 USD ($)	Apr. 30, 2022 USD ($)
Segment Reporting Information
Number of operating segments	3	3	3	3
Segment Reporting Information
Net revenue	$ 1,717	$ 1,607	$ 3,473	$ 3,281
Income from operations	383	360	809	736
Life Sciences and Applied Markets
Segment Reporting Information
Net revenue	968	896	2,001	1,872
Income from operations	264	228	578	510
Diagnostics and Genomics
Segment Reporting Information
Net revenue	362	358	704	697
Income from operations	73	91	132	159
Agilent CrossLab
Segment Reporting Information
Net revenue	387	353	768	712
Income from operations	103	87	206	178
Segment Total
Segment Reporting Information
Net revenue	1,717	1,607	3,473	3,281
Income from operations	$ 440	$ 406	$ 916	$ 847