Allowance for Doubtful Accounts - Schedule of Allowance for Retail, Wholesale, Trade & Other (Details) - USD ($) $ in Millions		9 Months Ended	12 Months Ended
		Jul. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period		$ 60	$ 65	$ 60	$ 51
Provision for doubtful accounts, net of recoveries			7	24	21
Charge-off of accounts	[1]		(8)	(15)	(11)
Allowance for doubtful accounts at end of period			48	65	60
Loss on Contract Termination for Default		1	1		2
Financing Receivable, Allowance for Credit Losses, Other			(16)	(4)	(1)
Retail Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period		21	24	21	27
Provision for doubtful accounts, net of recoveries			6	13	4
Charge-off of accounts	[1]		(3)	(9)	(10)
Allowance for doubtful accounts at end of period			22	24	21
Financing Receivable, Allowance for Credit Losses, Other			(5)	(1)	0
Impaired Financing Receivable, Average Recorded Investment			21	21
Wholesale Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period		2	3	2	0
Provision for doubtful accounts, net of recoveries			1	1	2
Charge-off of accounts	[1]		0	0	0
Allowance for doubtful accounts at end of period			4	3	2
Financing Receivable, Allowance for Credit Losses, Other			0	0	0
Trade and Other Receivables [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period		$ 37	38	37	24
Provision for doubtful accounts, net of recoveries			0	10	15
Charge-off of accounts	[1]		(5)	(6)	(1)
Allowance for doubtful accounts at end of period			22	38	37
Financing Receivable, Allowance for Credit Losses, Other			$ (11)	$ (3)	$ (1)

[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 in both 2015 and 2014, and less than $2 million in 2013.