Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 12	$ 11	$ 36	$ 30
Gross finance revenues	65	62	187	172
Intercompany Revenues	25	27	69	70
Less: Intercompany revenues	33	36	114	78
Finance revenues	40	35	118	102
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	19	17	54	50
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	26	28	75	75
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	$ 8	$ 6	$ 22	$ 17