Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 15	$ 13	$ 29	$ 24
Operating lease revenue	1
Gross finance revenues	78	63	152	122
Intercompany Revenues	30	23	57	44
Finance Revenues, Net	48	40	95	78
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	22	17	43	35
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	31	24	62	49
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	10	9	18	14
Financial Services Operations
Finance Revenues [Line Items]
Finance Revenues, Net	$ 48	$ 40	$ 95	$ 78