Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 11	$ 9	$ 30	$ 28
Gross finance revenues	62	60	172	177
Less: Intercompany revenues	27	26	70	75
Finance revenues	35	34	102	102
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	17	17	50	49
Wholesale Portfolio [Member] \| Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	28	29	75	81
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	$ 6	$ 5	$ 17	$ 19

Finance Revenue [Line Items]

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Finance Revenues From On Balance Sheet Receivables

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- Definition

Retail Notes And Finance Leases Revenue

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The aggregate financial services revenue and operating interest income earned during the reporting period.

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Related Parties
-URI http://asc.fasb.org/extlink&oid=16382449

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

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