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								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Earnings Per Share [Abstract]
Loss from continuing operations, net of tax									$ (97)	$ (187)	$ (622)
Income from discontinued operations, net of tax									0	3	3
Net loss attributable to Navistar International Corporation									$ (97)	$ (184)	$ (619)
Basic (in shares)	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	81.7	81.6	81.4
Weighted Average Number Diluted Shares Outstanding Adjustment									0.0	0.0	0.0
Diluted (in shares)	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	81.7	81.6	81.4
Basic: Loss from Continuing Operations (in dollars per share)	$ (0.42)	$ (0.42)	$ 0.05	$ (0.40)	$ (0.62)	$ (0.37)	$ (0.78)	$ (0.52)	$ (1.19)	$ (2.29)	$ (7.64)
Basic: Income (Loss) from Discontinued Operations (in dollars per share)	0.00	0.00	0.00	0.00	0.01	0.03	0.00	0.00	0.00	0.04	0.04
Basic (in dollars per share)	(0.42)	(0.42)	0.05	(0.40)	(0.61)	(0.34)	(0.78)	(0.52)	(1.19)	(2.25)	(7.60)
Diluted: Loss from Continuing Operations (in dollars per share)	(0.42)	(0.42)	0.05	(0.40)	(0.62)	(0.37)	(0.78)	(0.52)	(1.19)	(2.29)	(7.64)
Diluted: Income (Loss) from Discontinued Operations (in dollars per share)	0.00	0.00	0.00	0.00	0.01	0.03	0.00	0.00	0.00	0.04	0.04
Diluted (in dollars per share)	$ (0.42)	$ (0.42)	$ 0.05	$ (0.40)	$ (0.61)	$ (0.34)	$ (0.78)	$ (0.52)	$ (1.19)	$ (2.25)	$ (7.60)