Loss Per Share Attributable to Navistar International Corporation - Basic & Diluted Loss per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									15,700,000	24,800,000	29,900,000
Loss from continuing operations, net of tax									$ (187)	$ (622)	$ (857)
Income (loss) from discontinued operations, net of tax									3	3	(41)
Net loss attributable to Navistar International Corporation									$ (184)	$ (619)	$ (898)
Basic (in shares)	19.91	30.41	0	0	40.17	39.41	0	0	81,600,000	81,400,000	80,400,000
Weighted Average Number Diluted Shares Outstanding Adjustment									0	0	0
Diluted (in shares)	11.21	16.32	0	0	29.54	32.45	0	0	81,600,000	81,400,000	80,400,000
Basic: Loss from Continuing Operations (in dollars per share)	$ (0.62)	$ (0.37)	$ (0.78)	$ (0.52)	$ (0.88)	$ (0.04)	$ (3.66)	$ (3.07)	$ (2.29)	$ (7.64)	$ (10.66)
Basic: Income (Loss) from Discontinued Operations (in dollars per share)	0.01	0.03	0.00	0.00	0.00	0.02	0.01	0.02	0.04	0.04	(0.51)
Basic (in dollars per share)	(0.61)	(0.34)	(0.78)	(0.52)	(0.88)	(0.02)	(3.65)	(3.05)	(2.25)	(7.60)	(11.17)
Diluted: Loss from Continuing Operations (in dollars per share)	(0.62)	(0.37)	(0.78)	(0.52)	(0.88)	(0.04)	(3.66)	(3.07)	(2.29)	(7.64)	(10.66)
Diluted: Income (Loss) from Discontinued Operations (in dollars per share)	0.01	0.03	0.00	0.00	0.00	0.02	0.01	0.02	0.04	0.04	(0.51)
Diluted (in dollars per share)	$ (0.61)	$ (0.34)	$ (0.78)	$ (0.52)	$ (0.88)	$ (0.02)	$ (3.65)	$ (3.05)	$ (2.25)	$ (7.60)	$ (11.17)