Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 18	$ 15	$ 34	$ 29
Gross finance revenues	64	78	121	152
Intercompany Revenues	14	30	25	57
Finance Revenues, Net	48	48	92	95
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	23	22	44	43
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	19	31	35	62
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	4	10	8	18
Financial Services Operations
Finance Revenues [Line Items]
Finance Revenues, Net	$ 50	$ 48	$ 96	$ 95