Allowance for Doubtful Accounts - Schedule of Allowance Aging Analysis (Details) - USD ($) $ in Millions	Jul. 31, 2016	Oct. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	$ 1,582	$ 1,947
30-90 days past due	35	52
Total finance receivables	1,634	2,021
Retail Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	356	486
30-90 days past due	34	48
Total finance receivables	406	554
Wholesale Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	1,226	1,461
30-90 days past due	1	4
Total finance receivables	1,228	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	17	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	16	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