Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 16	$ 12	$ 45	$ 36
Gross finance revenues	74	65	226	187
Intercompany Revenues	28	25	85	69
Finance Revenues, Net	46	40	141	118
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	19	19	62	54
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	31	26	93	75
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	8	8	26	22
Financial Services Operations
Finance Revenues [Line Items]
Finance Revenues, Net	$ 46	$ 40	$ 141	$ 118