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REVENUE - Contract Balances (Details) - USD ($) $ in Millions		12 Months Ended
	Nov. 01, 2018	Oct. 31, 2020	Oct. 31, 2019
Contract with Customer, Asset, after Allowance for Credit Loss		$ 153	$ 110
Contract Liability ending balance	$ 367	386	367
Increase (Decrease) in Contract with Customer, Liability		347	303
Contract with Customer, Liability, Revenue Recognized		(300)	(287)
Contract with Customer, Refund Liability		9	5
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination			9
Translation Adjustment Functional to Reporting Currency, Net of Tax, Period Increase (Decrease)		4	0
Contract Liability ending balance		446	$ 386
Revenue, Remaining Performance Obligation, Amount		$ 217
Difference between Revenue Guidance in Effect before and after Topic 606
Deferred Revenue, Period Increase (Decrease)	$ (11)

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- Definition

The increase (decrease) during the reporting period in the amount of prepayments by customers for goods and services to be provided at a later date net of revenue recognized.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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