Allowance for Doubtful Accounts - Schedule of Allowance Aging Analysis (Details) - USD ($) $ in Millions	Jan. 31, 2016	Oct. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	$ 1,584	$ 1,947
30-90 days past due	49	52
Over 90 days past due	19	22
Total finance receivables	1,652	2,021
Retail Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	382	486
30-90 days past due	46	48
Over 90 days past due	18	20
Total finance receivables	446	554
Wholesale Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	1,202	1,461
30-90 days past due	3	4
Over 90 days past due	1	2
Total finance receivables	$ 1,206	$ 1,467