Earnings (Loss) Per Share Attributable to Navistar International Corporation - Basic & Diluted Loss per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Earnings Per Share [Abstract]
Income (loss), net of tax	$ (80)	$ 4	$ (142)	$ (29)
Net loss attributable to Navistar International Corporation	$ (80)	$ 4	$ (142)	$ (29)
Basic (in shares)	93.3	81.7	87.5	81.7
Weighted Average Number Diluted Shares Outstanding Adjustment	0.0	0.3	0.0	0.0
Diluted (in shares)	93.3	82.0	87.5	81.7
Basic: Loss from Continuing Operations (in dollars per share)	$ (0.86)	$ 0.05	$ (1.62)	$ (0.35)
Diluted: Loss from Continuing Operations (in dollars per share)	$ (0.86)	$ 0.05	$ (1.62)	$ (0.35)