Finance Receivables - Finance Receivables (Details) (USD $) In Millions, unless otherwise specified	Oct. 31, 2014		Oct. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	$ 2,065		$ 1,958
Less: Allowance for Doubtful accounts	27		23
Total finance receivables, net	2,038		1,935
Financing Receivable, Recorded Investment, Current	1,758	[1]	1,597	[1]
Finance Receivables, Noncurrent	280		338
Loans and Leases Receivable Due In One Year	1,807
Loans and Leases Receivable Due In Two Years	147
Loans and Leases Receivable Due In Three Years	88
Loans and Leases Receivable Due In Four Years	50
Loans and Leases Receivable Due In Five Years	22
Loans and Leases Receivable Due Thereafter	2
Finance Receivables Gross	2,116
Loans and Leases Receivable, Deferred Income	51
Total finance receivables	2,065
Retail Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	726		751
Loans and Leases Receivable Due In One Year	468
Loans and Leases Receivable Due In Two Years	147
Loans and Leases Receivable Due In Three Years	88
Loans and Leases Receivable Due In Four Years	50
Loans and Leases Receivable Due In Five Years	22
Loans and Leases Receivable Due Thereafter	2
Finance Receivables Gross	777
Loans and Leases Receivable, Deferred Income	51
Total finance receivables	726
Wholesale Portfolio [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	1,339		1,207
Loans and Leases Receivable Due In One Year	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	1,339
Loans and Leases Receivable, Deferred Income	0
Total finance receivables	$ 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.