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SEGMENT INFORMATION - Profitability (Details) $ in Millions	3 Months Ended
	Jan. 31, 2025 USD ($)	Jan. 31, 2024 USD ($)
Segment Reporting Information
Number of operating segments	3	3
Segment Reporting Information
Net revenue	$ 1,681	$ 1,658
Income from operations	376	384
Operating Segments
Segment Reporting Information
Income from operations	422	428
Life Sciences and Diagnostics Markets
Segment Reporting Information
Net revenue	647	620
Life Sciences and Diagnostics Markets | Operating Segments
Segment Reporting Information
Income from operations	117	114
Agilent CrossLab
Segment Reporting Information
Net revenue	696	686
Agilent CrossLab | Operating Segments
Segment Reporting Information
Income from operations	221	222
Applied Markets
Segment Reporting Information
Net revenue	338	352
Applied Markets | Operating Segments
Segment Reporting Information
Income from operations	$ 84	$ 92

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