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, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	14.9	16.0	14.8	16.0
Income (loss) from continuing operations, net of tax	$ 4	$ (64)	$ (29)	$ (106)
Income (loss) from discontinued operations, net of tax	0	0	0	0
Net loss attributable to Navistar International Corporation	$ 4	$ (64)	$ (29)	$ (106)
Basic (in shares)	81.7	81.6	81.7	81.5
Weighted Average Number Diluted Shares Outstanding Adjustment	0.3	0.0	0.0	0.0
Diluted (in shares)	82.0	81.6	81.7	81.5
Basic: Loss from Continuing Operations (in dollars per share)	$ 0.05	$ (0.78)	$ (0.35)	$ (1.30)
Basic: Income (Loss) from Discontinued Operations (in dollars per share)	0.00	0.00	0.00	0.00
Basic (in dollars per share)	0.05	(0.78)	(0.35)	(1.30)
Diluted: Loss from Continuing Operations (in dollars per share)	0.05	(0.78)	(0.35)	(1.30)
Diluted: Income (Loss) from Discontinued Operations (in dollars per share)	0.00	0.00	0.00	0.00
Diluted (in dollars per share)	$ 0.05	$ (0.78)	$ (0.35)	$ (1.30)