Finance Receivables - Finance Revenues (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Finance Revenues [Line Items]
Retail notes and finance leases revenue	$ 16	$ 20	$ 33	$ 41
Gross finance revenues	57	58	112	117
Less: Intercompany revenues	(19)	(19)	(35)	(39)
Finance revenues	38	39	77	78
Financing Receivable [Member]
Finance Revenues [Line Items]
Operating lease revenue	15	12	29	24
Wholesale Portfolio [Member] | Notes Receivable [Member]
Finance Revenues [Line Items]
Interest Income, Operating	19	19	37	39
Retail And Wholesale Portfolios [Member]
Finance Revenues [Line Items]
Interest Income, Operating	$ 7	$ 7	$ 13	$ 13