Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount, including 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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Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Revenue - Narrative (Details) - USD ($) $ in Millions	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Oct. 31, 2018
Disaggregation of Revenue [Line Items]
Operating lease revenue	$ 1
Third-Party Financings [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2		$ 5
Extended warranty contracts [Member]
Disaggregation of Revenue [Line Items]
Contract liabilities	271		271		$ 255
Revenue from Contract with Customer, Including Assessed Tax	$ 29	$ 27	$ 58	$ 56