Allowance for Doubtful Accounts - Schedule of Allowance for Retail, Wholesale, Trade & Other (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	$ 48	$ 65
Provision for doubtful accounts, net of recoveries	5	2
Charge-off of accounts	(4)	(4)
Allowance for doubtful accounts at end of period	46	58
Loss on Contract Termination for Default	1	1
Financing Receivable, Allowance for Credit Losses, Other	(3)	(5)
Retail Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	22	24
Provision for doubtful accounts, net of recoveries	2	2
Charge-off of accounts	(3)	(1)
Allowance for doubtful accounts at end of period	19	23
Financing Receivable, Allowance for Credit Losses, Other	(2)	(2)
Impaired Financing Receivable, Average Recorded Investment	20	19
Wholesale Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	4	3
Provision for doubtful accounts, net of recoveries	0	0
Charge-off of accounts	0	0
Allowance for doubtful accounts at end of period	4	3
Financing Receivable, Allowance for Credit Losses, Other	0	0
Trade and Other Receivables [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	22	38
Provision for doubtful accounts, net of recoveries	3	0
Charge-off of accounts	(1)	(3)
Allowance for doubtful accounts at end of period	23	32
Financing Receivable, Allowance for Credit Losses, Other	$ (1)	$ (3)