Finance Receivables - Finance Receivables (Details) - USD ($) $ in Millions		Apr. 30, 2017	Oct. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		$ 1,714	$ 1,698
Less: Allowance for Doubtful accounts		23	21
Total finance receivables, net		1,691	1,677
Financing Receivable, Recorded Investment, Current	[1]	1,459	1,457
Finance Receivables, Noncurrent		232	220
Loans and Leases Receivable, Gross		1,714	1,698
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		545	499
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered		$ 1,169	$ 1,199

[1] (A)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.