Summary of Significant Accounting Policies - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2017 USD ($) employees segments	Jul. 31, 2016 USD ($)	Jul. 31, 2017 USD ($) employees	Jul. 31, 2016 USD ($)	Oct. 31, 2016 USD ($)
Accounting Policies [Line Items]
Costs of products sold	$ 1,803	$ 1,757	$ 4,949	$ 5,068
Net loss attributable to Navistar International Corporation	$ 37	(34)	(105)	(63)
Number Of Segments | segments	4
Goodwill	$ 38		38		$ 38
Sales of manufactured products, net	2,178	2,052	5,870	5,946
Interest expense	91	84	262	246
Capital expenditures	$ 27	30	93	83
Proceeds from finance lease obligations			49	17
Product Warranty Accrual, Preexisting, Increase (Decrease)			$ (4)	70
Document Type			10-Q
Unionized Employees Concentration Risk [Member] | Number Of Employees Hourly Workers [Member]
Accounting Policies [Line Items]
Concentration Risk Number Of Employees | employees	6,600		6,600
concentration risk number of employees percentage	94.00%		94.00%
Unionized Employees Concentration Risk [Member] | Number of Employees Salaried Workers [Member]
Accounting Policies [Line Items]
Concentration Risk Number Of Employees | employees	900		900
concentration risk number of employees percentage	17.00%		17.00%
North America Truck [Member]
Accounting Policies [Line Items]
Interest expense	$ 0	0	$ 0	0
Capital expenditures	21	26	78	70
Extended Warranty Programs [Member]
Accounting Policies [Line Items]
Deferred Revenue, Revenue Recognized	28	$ 37	109	$ 113
Deferred Revenue	$ 280		$ 280		$ 325