Allowance for Doubtful Accounts - Schedule of Allowance for Retail, Wholesale, Trade & Other (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	$ 4	$ 1
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	44	50
Allowance for doubtful accounts at end of period	46	51
Financing Receivable, Allowance for Credit Losses, Write-downs	(2)	(1)
Allowance for Doubtful Accounts Receivable, Recoveries		0
Financing Receivable, Allowance for Credit Losses, Other	0	1
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for Doubtful Accounts Receivable, Recoveries	0
Retail Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	3	1
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	20	19
Allowance for doubtful accounts at end of period	22	20
Impaired Financing Receivable, Average Recorded Investment	25	21
Financing Receivable, Allowance for Credit Losses, Write-downs	(2)	(1)
Allowance for Doubtful Accounts Receivable, Recoveries		0
Financing Receivable, Allowance for Credit Losses, Other	1	1
Wholesale Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	0	0
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	3	3
Allowance for doubtful accounts at end of period	3	3
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0
Allowance for Doubtful Accounts Receivable, Recoveries		0
Financing Receivable, Allowance for Credit Losses, Other	0	0
Trade and Other Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	1	0
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts at beginning of period	21	28
Allowance for doubtful accounts at end of period	21	28
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0
Allowance for Doubtful Accounts Receivable, Recoveries		0
Financing Receivable, Allowance for Credit Losses, Other	(1)	$ 0
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	$ 0