SEGMENT INFORMATION - Profitability (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016 USD ($)	Jul. 31, 2015 USD ($)	Jul. 31, 2016 USD ($)	Jul. 31, 2015 USD ($)
Segment Reporting [Abstract]
Number of operating segments	3
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Total net revenue	$ 1,044	$ 1,014	$ 3,091	$ 3,003
Income from operations	146	144	432	366
Life Sciences and Applied Markets
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Total net revenue	504	511	1,525	1,531
Income from operations	96	95	304	277
Diagnostics and Genomics
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Total net revenue	180	167	516	484
Income from operations	34	28	76	54
Agilent CrossLab
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Total net revenue	360	336	1,050	988
Income from operations	82	76	232	213
Segment Total
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Total net revenue	1,044	1,014	3,091	3,003
Income from operations	$ 212	$ 199	$ 612	$ 544