Stockholders' Deficit Accumulated Other Comprehensive Income (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
	Feb. 28, 2017	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017	Oct. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance of common stock				$ 0	$ 256
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance		$ (2,154)	$ (2,617)	(2,211)	(2,640)
Other comprehensive loss before reclassifications		(28)	4	(8)	(8)
Amounts reclassified out of accumulated other comprehensive loss		28	34	65	69
Net current-period other comprehensive income (loss)		0	38	57	61
Accumulated Other Comprehensive Loss, Ending Balance		(2,154)	(2,579)	(2,154)	(2,579)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax		0	0
Tax expense		(7)	(6)	(22)	(10)
Net income (loss) attributable to Navistar International Corporation		$ 55	(80)	$ (18)	(142)
Common stock, shares authorized		220.0		220.0		220.0
Common stock, par value		$ 0.1		$ 0.1		$ 0.10
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance		$ 0	1	$ 0	1
Other comprehensive loss before reclassifications		0	0	0	0
Amounts reclassified out of accumulated other comprehensive loss		0	0	0	0
Net current-period other comprehensive income (loss)		0	0	0	0
Accumulated Other Comprehensive Loss, Ending Balance		0	1	0	1
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance		(261)	(292)	(283)	(280)
Other comprehensive loss before reclassifications		(28)	4	(6)	(8)
Amounts reclassified out of accumulated other comprehensive loss		0	0	0	0
Net current-period other comprehensive income (loss)		(28)	4	(6)	(8)
Accumulated Other Comprehensive Loss, Ending Balance		(289)	(288)	(289)	(288)
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance		(1,893)	(2,326)	(1,928)	(2,361)
Other comprehensive loss before reclassifications		0	0	(2)	0
Amounts reclassified out of accumulated other comprehensive loss		28	34	65	69
Net current-period other comprehensive income (loss)		28	34	63	69
Accumulated Other Comprehensive Loss, Ending Balance		(1,865)	(2,292)	(1,865)	(2,292)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Amortization of actuarial loss		29	35	57	70
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Benefits
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Amortization of actuarial loss				9	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		(29)	(35)	(66)	(70)
Tax expense		(1)	(1)	(1)	(1)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent		$ 28	$ 34	$ 65	$ 69
Volkswagen Truck and Bus GmbH [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stock Purchase Agreement, Ownership Percentage Transferred to Acquirer, Pro Forma	16.60%
Stock Purchase Agreement, Ownership Percentage Transferred to Acquirer	19.90%
Stock Issued During Period, Shares, New Issues	16.2
Share Price			$ 15.76		$ 15.76
Issuance of common stock			$ 256