Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 14	$ 16	$ 48	$ 45
Gross finance revenues	49	74	170	226
Intercompany Revenues	10	28	35	85
Finance Revenues, Net	36	46	128	141
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	20	19	64	62
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	14	31	49	93
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	1	8	9	26
Financial Services Operations
Finance Revenues [Line Items]
Finance Revenues, Net	$ 39	$ 46	$ 135	$ 141