Document and Entity Information Document	6 Months Ended
	Apr. 30, 2018 shares
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	nav
Entity Registrant Name	NAVISTAR INTERNATIONAL CORP
Entity Central Index Key	0000808450
Current Fiscal Year End Date	--10-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	98,774,412