Allowance for Doubtful Accounts - Retail, Wholesale, Trade & Other (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Jul. 31, 2013		Jul. 31, 2012		Jul. 31, 2013 segments		Jul. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable By Class Number of Portfolio Segments					2
Allowance for doubtful accounts at beginning of period	$ 58		$ 45		$ 51		$ 50
Provision for doubtful accounts, net of recoveries	5		1		16		1
Charge-off of accounts	(1)	[1]	(3)	[1]	(7)	[1]	(8)	[1]
Financing Receivable, Allowance for Credit Losses, Other	(3)	[2]	0	[2]	(1)	[2]	0	[2]
Allowance for doubtful accounts at end of period	59		43		59		43
Loss on Contract Termination for Default	1		1		1		4
Retail Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for doubtful accounts at beginning of period	22		26		27		31
Provision for doubtful accounts, net of recoveries	2		1		1		(1)
Charge-off of accounts	(1)	[1]	(1)	[1]	(7)	[1]	(4)	[1]
Financing Receivable, Allowance for Credit Losses, Other	(1)	[2]	0	[2]	1	[2]	0	[2]
Allowance for doubtful accounts at end of period	22		26		22		26
Wholesale Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for doubtful accounts at beginning of period	2		2		0		2
Provision for doubtful accounts, net of recoveries	0		0		2		0
Charge-off of accounts	0	[1]	0	[1]	0	[1]	0	[1]
Financing Receivable, Allowance for Credit Losses, Other	0	[2]	0	[2]	0	[2]	0	[2]
Allowance for doubtful accounts at end of period	2		2		2		2
Financing Receivable Number Of Classes Of Receivables In Each Portfolio					1
Trade and Other Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for doubtful accounts at beginning of period	34		17		24		17
Provision for doubtful accounts, net of recoveries	3		0		13		2
Charge-off of accounts	0	[1]	(2)	[1]	0	[1]	(4)	[1]
Financing Receivable, Allowance for Credit Losses, Other	(2)	[2]	0	[2]	(2)	[2]	0	[2]
Allowance for doubtful accounts at end of period	$ 35		$ 15		$ 35		$ 15

[1] We repossess sold and leased vehicles on defaulted finance receivables and leases, and place them into Inventories. Losses recognized at the time of repossession and charged against the allowance for doubtful accounts were less than $1 million for both the three and nine months ended July 31, 2013 and $1 million and $4 million for the three and nine months ended July 31, 2012, respectively.

[2] Amounts include currency translation.