REVENUE - Revenue by Type (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2021	Jan. 31, 2020
Net revenue	$ 1,548	$ 1,357
Instrumentation
Net revenue	681	593
Non-Instrumentation and Other
Net revenue	$ 867	$ 764

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