Stockholders' Deficit Accumulated Other Comprehensive Income (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
	Nov. 01, 2019	Jan. 31, 2020	Jan. 31, 2019	Oct. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	$ (1,912)	$ (1,912)	$ (1,920)
Other comprehensive loss before reclassifications		(8)	6
Amounts reclassified out of accumulated other comprehensive loss		25	123
Net current-period other comprehensive income (loss)		17	129
Accumulated Other Comprehensive Loss, Ending Balance		(2,084)	(1,791)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Restructuring Charges		(1)	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax		0	142
Tax expense		5	19
Net income (loss) attributable to Navistar International Corporation		$ (36)	11
Common stock, shares authorized		220		220
Common stock, par value		$ 0.10		$ 0.1
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect	189	$ (189)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	(321)	(321)	(315)
Other comprehensive loss before reclassifications		(8)	14
Amounts reclassified out of accumulated other comprehensive loss		0	0
Net current-period other comprehensive income (loss)		(8)	14
Accumulated Other Comprehensive Loss, Ending Balance		(329)	(301)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect		0
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	$ (1,591)	(1,591)	(1,605)
Other comprehensive loss before reclassifications		0	(8)
Amounts reclassified out of accumulated other comprehensive loss		25	123
Net current-period other comprehensive income (loss)		25	115
Accumulated Other Comprehensive Loss, Ending Balance		(1,755)	(1,490)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Amortization of actuarial loss		25	24
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect		(189)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Benefits
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		(25)	(166)
Tax expense		0	(43)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent		$ 25	$ 123