Allowance for Doubtful Accounts - Schedule of Allowance for Retail, Wholesale, Trade & Other (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	$ 48	$ 49
Provision for doubtful accounts, net of recoveries	1	6
Charge-off of accounts	(1)	(4)
Allowance for Doubtful Accounts Receivable, Recoveries		0
Financing Receivable, Allowance for Credit Losses, Other	1	(2)
Allowance for doubtful accounts at end of period	50	49
Allowance for Doubtful Accounts [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for Doubtful Accounts Receivable, Recoveries	1
Retail Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	17	19
Provision for doubtful accounts, net of recoveries	0	5
Charge-off of accounts	(1)	(3)
Financing Receivable, Allowance for Credit Losses, Other	1	(2)
Allowance for doubtful accounts at end of period	18	19
Impaired Financing Receivable, Average Recorded Investment	18	13
Wholesale Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	3	2
Provision for doubtful accounts, net of recoveries	0	0
Charge-off of accounts	0	0
Financing Receivable, Allowance for Credit Losses, Other	0	0
Allowance for doubtful accounts at end of period	3	2
Trade and Other Receivables [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	28	28
Provision for doubtful accounts, net of recoveries	1	1
Charge-off of accounts	0	(1)
Financing Receivable, Allowance for Credit Losses, Other	0	0
Allowance for doubtful accounts at end of period	29	$ 28
Trade and Other Receivables [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for Doubtful Accounts Receivable, Recoveries	0
Wholesale Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for Doubtful Accounts Receivable, Recoveries	0
Retail Portfolio [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for Doubtful Accounts Receivable, Recoveries	$ 1