REVENUE- Revenue by Region (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2021	Jan. 31, 2020
Net revenue	$ 1,548	$ 1,357
Life Sciences and Applied Markets
Net revenue	722	638
Agilent CrossLab
Net revenue	532	470
Diagnostics and Genomics
Net revenue	294	249
Americas
Net revenue	555	494
Americas \| Life Sciences and Applied Markets
Net revenue	224	209
Americas \| Agilent CrossLab
Net revenue	179	167
Americas \| Diagnostics and Genomics
Net revenue	152	118
Europe
Net revenue	437	392
Europe \| Life Sciences and Applied Markets
Net revenue	190	167
Europe \| Agilent CrossLab
Net revenue	147	133
Europe \| Diagnostics and Genomics
Net revenue	100	92
Asia Pacific
Net revenue	556	471
Asia Pacific \| Life Sciences and Applied Markets
Net revenue	308	262
Asia Pacific \| Agilent CrossLab
Net revenue	206	170
Asia Pacific \| Diagnostics and Genomics
Net revenue	$ 42	$ 39

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details