Loss Per Share Attributable to Navistar International Corporation - Basic & Diluted Loss per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Earnings Per Share [Abstract]
Income (loss) from continuing operations, net of tax									$ (857)	$ (2,939)	$ 1,797
Loss from discontinued operations, net of tax									(41)	(71)	(74)
Net income (loss) attributable to Navistar International Corporation									$ (898)	$ (3,010)	$ 1,723
Weighted Average Number of Shares Outstanding, Basic	39.79	38.81	0	0	26.48	35.25	0	0	80,400,000.00	69,100,000.00	72,800,000.00
Weighted Average Number Diluted Shares Outstanding Adjustment									0	0	3,300,000
Weighted Average Number of Shares Outstanding, Diluted	31.88	25.56	0	0	18.17	20.21	0	0	80,400,000.00	69,100,000.00	76,100,000.00
Basic: Loss from Continuing Operations (in dollars per share)	$ (1.90)	$ (2.94)	$ (4.39)	$ (1.42)	$ (39.67)	$ 1.16	$ (2.01)	$ (2.06)	$ (10.66)	$ (42.53)	$ 24.68
Basic: Loss from Discontinued Operations (in dollars per share)	$ (0.01)	$ (0.12)	$ (0.26)	$ (0.11)	$ (0.46)	$ 0.06	$ (0.49)	$ (0.13)	$ (0.51)	$ (1.03)	$ (1.02)
Basic (in dollars per share)	$ (1.91)	$ (3.06)	$ (4.65)	$ (1.53)	$ (40.13)	$ 1.22	$ (2.50)	$ (2.19)	$ (11.17)	$ (43.56)	$ 23.66
Diluted: Loss from Continuing Operations (in dollars per share)	$ (1.90)	$ (2.94)	$ (4.39)	$ (1.42)	$ (39.67)	$ 1.16	$ (2.01)	$ (2.06)	$ (10.66)	$ (42.53)	$ 23.61
Diluted: Loss from Discontinued Operations (in dollars per share)	$ (0.01)	$ (0.12)	$ (0.26)	$ (0.11)	$ (0.46)	$ 0.06	$ (0.49)	$ (0.13)	$ (0.51)	$ (1.03)	$ (0.97)
Diluted (in dollars per share)	$ (1.91)	$ (3.06)	$ (4.65)	$ (1.53)	$ (40.13)	$ 1.22	$ (2.50)	$ (2.19)	$ (11.17)	$ (43.56)	$ 22.64