Allowance for Doubtful Accounts - Schedule of Allowance Aging Analysis (Details) - USD ($) $ in Millions	Jul. 31, 2017	Oct. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	$ 1,755	$ 1,647
30-90 days past due	40	37
Total finance receivables	1,811	1,698
Retail Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	465	449
30-90 days past due	39	37
Total finance receivables	520	499
Wholesale Portfolio [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Finance Receivables, Current	1,290	1,198
30-90 days past due	1	0
Total finance receivables	1,291	1,199
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Over 90 days past due	16	14
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	13
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	$ 0	$ 1