Finance Receivables - Finance Receivables (Details) - USD ($) $ in Millions		Jul. 31, 2016	Oct. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		$ 1,634	$ 2,021
Less: Allowance for Doubtful accounts		21	26
Total finance receivables, net		1,613	1,995
Financing Receivable, Recorded Investment, Current	[1]	1,410	1,779
Finance Receivables, Noncurrent		203	216
Loans and Leases Receivable, Gross		1,634	2,021
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		406	554
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		$ 1,228	$ 1,467

[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.