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SEGMENT INFORMATION - Entity-Wide Disclosures Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Revenue by geography
Net revenue	$ 5,339	$ 5,163	$ 4,914
UNITED STATES
Revenue by geography
Net revenue	1,752	1,619	1,414
CHINA
Revenue by geography
Net revenue	1,087	1,019	1,015
Rest Of World
Revenue by geography
Net revenue	$ 2,500	$ 2,525	$ 2,485

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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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