Allowance for Doubtful Accounts - Schedule of Allowance Aging Analysis (Details) - USD ($) $ in Millions	Apr. 30, 2016	Oct. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	$ 1,711	$ 1,947
30-90 days past due	55	52
Total finance receivables	1,786	2,021
Retail Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	435	486
30-90 days past due	52	48
Total finance receivables	506	554
Wholesale Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	1,276	1,461
30-90 days past due	3	4
Total finance receivables	1,280	1,467
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Over 90 days past due	20	22
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Retail Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Over 90 days past due	19	20
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Wholesale Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Over 90 days past due	$ 1	$ 2