Finance Receivables - Finance Receivables (Details) - USD ($) $ in Millions		Oct. 31, 2015	Oct. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable Due In One Year		$ 1,819
Loans and Leases Receivable, Gross, Carrying Amount, Covered		2,021	$ 2,065
Less: Allowance for Doubtful accounts		26	27
Total finance receivables, net		1,995	2,038
Financing Receivable, Recorded Investment, Current	[1]	1,779	1,758
Finance Receivables, Noncurrent		216	280
Loans and Leases Receivable Due In Two Years		107
Loans and Leases Receivable Due In Three Years		76
Loans and Leases Receivable Due In Four Years		41
Loans and Leases Receivable Due In Five Years		14
Loans and Leases Receivable Due Thereafter		1
Finance Receivables Gross		2,058
Loans and Leases Receivable, Deferred Income		37
Loans and Leases Receivable, Gross		2,021
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable Due In One Year		352
Loans and Leases Receivable, Gross, Carrying Amount, Covered		554	726
Loans and Leases Receivable Due In Two Years		107
Loans and Leases Receivable Due In Three Years		76
Loans and Leases Receivable Due In Four Years		41
Loans and Leases Receivable Due In Five Years		14
Loans and Leases Receivable Due Thereafter		1
Finance Receivables Gross		591
Loans and Leases Receivable, Deferred Income		37
Loans and Leases Receivable, Gross		554
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable Due In One Year		1,467
Loans and Leases Receivable, Gross, Carrying Amount, Covered		1,467	$ 1,339
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		1,467
Loans and Leases Receivable, Deferred Income		0
Loans and Leases Receivable, Gross		$ 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.