Allowance for Doubtful Accounts - Impaired Finance Receivables (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2013		Oct. 31, 2012
Retail Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 13		$ 16
Impaired finance receivables with specific loss reserves [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Recorded Investment	15	[1]	14	[1]
Impaired finance receivables with specific loss reserves [Member] | Retail Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Recorded Investment	15		14
Impaired finance receivables with specific loss reserves [Member] | Wholesale Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Recorded Investment	0		0
Impaired financing receivable without specific loss reserves [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Recorded Investment	1		1
Impaired financing receivable without specific loss reserves [Member] | Retail Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Recorded Investment	1		1
Impaired financing receivable without specific loss reserves [Member] | Wholesale Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Impaired Financing Receivable, Recorded Investment	0		0
Specific loss reserves on impaired finance receivables [Member]
Finance Receivable, Impaired [Line Items]
Specific loss reserves on impaired finance receivables	6		9
Specific loss reserves on impaired finance receivables [Member] | Retail Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Specific loss reserves on impaired finance receivables	6		9
Specific loss reserves on impaired finance receivables [Member] | Wholesale Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Specific loss reserves on impaired finance receivables	0		0
Finance receivable non-accrual status [Member]
Finance Receivable, Impaired [Line Items]
Finance receivables on non-accrual status	10		10
Finance receivable non-accrual status [Member] | Retail Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Finance receivables on non-accrual status	10		10
Finance receivable non-accrual status [Member] | Wholesale Portfolio [Member]
Finance Receivable, Impaired [Line Items]
Finance receivables on non-accrual status	$ 0		$ 0

[1] Certain impaired finance receivables are measured at fair value on a nonrecurring basis. An impairment charge is recorded for the amount by which the carrying value of the receivables exceeds the fair value of the underlying collateral, net of remarketing costs. Fair values of the underlying collateral are determined by reference to dealer vehicle value publications adjusted for certain market factors.