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REVENUE - Contract Assets and Liability (Details) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Oct. 31, 2019
Contract Asset
Contract Assets (Unbilled Accounts Receivable)	$ 130		$ 110
Increase in Contract Asset Balance	20
Contract Liability
Contract liability ending balance as of October 31, 2019	386
Net revenue deferred in the period	289
Revenue recognized that was included in the contract liability balance at the beginning of the period	(226)	$ (191)
Change in deferrals from customer cash advances, net of revenue recognized	8
Currency Translation and Other Adjustment	(5)
Contract liability ending balance as of April 30, 2020	$ 452

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Increase (decrease) in 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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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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