Finance Receivables - Finance Receivables (Details) - USD ($) $ in Millions		Oct. 31, 2016	Oct. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable Due In One Year		$ 1,493
Loans and Leases Receivable, Gross, Carrying Amount, Covered		1,698	$ 2,021
Less: Allowance for Doubtful accounts		21	26
Total finance receivables, net		1,677	1,995
Financing Receivable, Recorded Investment, Current	[1]	1,457	1,779
Finance Receivables, Noncurrent		220	216
Loans and Leases Receivable Due In Two Years		106
Loans and Leases Receivable Due In Three Years		77
Loans and Leases Receivable Due In Four Years		43
Loans and Leases Receivable Due In Five Years		14
Loans and Leases Receivable Due Thereafter		3
Finance Receivables Gross		1,736
Loans and Leases Receivable, Gross		1,698
Loans and Leases Receivable, Deferred Income		38
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable Due In One Year		294
Loans and Leases Receivable, Gross, Carrying Amount, Covered		499	554
Loans and Leases Receivable Due In Two Years		106
Loans and Leases Receivable Due In Three Years		77
Loans and Leases Receivable Due In Four Years		43
Loans and Leases Receivable Due In Five Years		14
Loans and Leases Receivable Due Thereafter		3
Finance Receivables Gross		537
Loans and Leases Receivable, Gross		499
Loans and Leases Receivable, Deferred Income		38
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable Due In One Year		1,199
Loans and Leases Receivable, Gross, Carrying Amount, Covered		1,199	$ 1,467
Loans and Leases Receivable Due In Two Years		0
Loans and Leases Receivable Due In Three Years		0
Loans and Leases Receivable Due In Four Years		0
Loans and Leases Receivable Due In Five Years		0
Loans and Leases Receivable Due Thereafter		0
Finance Receivables Gross		1,199
Loans and Leases Receivable, Gross		1,199
Loans and Leases Receivable, Deferred Income		$ 0

[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.