Finance Receivables - Finance Receivables (Details) - USD ($) $ in Millions		Jul. 31, 2015	Oct. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		$ 1,978	$ 2,065
Less: Allowance for Doubtful accounts		28	27
Total finance receivables, net		1,950	2,038
Financing Receivable, Recorded Investment, Current	[1]	1,737	1,758
Finance Receivables, Noncurrent		213	280
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		606	726
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		$ 1,372	$ 1,339

[1] The current portion of finance receivables is computed based on contractual maturities. Actual cash collections typically vary from the contractual cash flows because of prepayments, extensions, delinquencies, credit losses, and renewals.