Debt - Narrative (Details)	3 Months Ended			9 Months Ended
	Jul. 31, 2018 USD ($)	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)	Jul. 31, 2018 USD ($)	Jul. 31, 2017 USD ($)	Oct. 31, 2017 USD ($)
Debt Instrument [Line Items]
Notes Issued		$ 1,100,000,000
Senior Notes		$ 1,051,000,000
Percentage of Aggregate Principal		0.7250
Notes Payable		$ 1,003.80
Line of Credit Facility, Increase (Decrease) for Period, Description		1700
Debt Instrument, Coupon Rate, Increase (Decrease)		0.0675	0.0650
Long-term Line of Credit		$ 1,600,000,000
Amortization		4,000,000
Line of Credit Facility, Maximum Borrowing Capacity		350,000,000
Payments of Debt Issuance Costs				$ 36,000,000	$ 22,000,000
Debt Instrument, Interest Rate, Stated Percentage	6.75%			6.75%
Term Loan [Member]
Debt Instrument [Line Items]
Amortization	$ 1,000,000
Gross maximum borrowing capacity	400,000,000			$ 400,000,000
Debt Issuance Costs, Line of Credit Arrangements, Gross	4,000,000			4,000,000
Debt Instrument, Unamortized Discount	2,000,000			2,000,000
Financial Services Operations | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 275,000,000			$ 269,000,000
Financial Services Operations | VFN Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		425,000,000
Financial Services Operations | Trac Funding Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt		30,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt		$ 16,000,000
Line of Credit [Member] | Manufacturing Operations [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	0			0		7,000,000
Debt Issuance Costs, Net	0			0		9,000,000
Line of Credit [Member] | Financial Services Operations
Debt Instrument [Line Items]
Debt Issuance Costs, Net	$ 1,000,000			$ 1,000,000		$ 2,000,000