Finance Receivables - Schedule of Finance Revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 13	$ 10	$ 24	$ 19
Gross finance revenues	63	56	122	110
Intercompany Revenues	23	23	44	43
Less: Intercompany revenues	41	27	81	42
Finance revenues	40	33	78	67
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	17	16	35	33
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	24	24	49	47
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	$ 9	$ 6	$ 14	$ 11