Stockholders' Deficit (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018	Apr. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred Stock, Par or Stated Value Per Share		$ 1.00
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 75	$ 5
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	(1,912)	(1,920)	$ (2,211)
Other comprehensive loss before reclassifications	137	(184)	169
Amounts reclassified out of accumulated other comprehensive loss	102	192	122
Net current-period other comprehensive income (loss)	239	8	291
Accumulated Other Comprehensive Loss, Ending Balance	(1,865)	(1,912)	(1,920)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Total before tax	329	(243)	(368)
Tax expense	59	(19)	(52)
Net income (loss) attributable to Navistar International Corporation	(347)	$ 221	$ 340
Debt Instrument, Unamortized Discount	43
Common stock, shares authorized		220,000,000	220,000,000
Common stock, par value			$ 0.1
Accumulated Other Comprehensive Income (Loss)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Reclassification of stranded tax effects	(192)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	(321)	$ (315)	$ (283)
Other comprehensive loss before reclassifications	(83)	(6)	(32)
Amounts reclassified out of accumulated other comprehensive loss	0	0	0
Net current-period other comprehensive income (loss)	(83)	(6)	(32)
Accumulated Other Comprehensive Loss, Ending Balance	(404)	(321)	(315)
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Loss, Beginning Balance	(1,591)	(1,605)	(1,928)
Other comprehensive loss before reclassifications	220	(178)	201
Amounts reclassified out of accumulated other comprehensive loss	102	192	122
Net current-period other comprehensive income (loss)	322	14	323
Accumulated Other Comprehensive Loss, Ending Balance	(1,461)	(1,591)	(1,605)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Benefits
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Amortization of prior service costs (benefit)	1	0	0
Amortization of actuarial loss	96	93	114
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax	7	143	9
Total before tax	104	236	123
Tax expense	(2)	(44)	(1)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	$ 102	192	$ 122
Convertible Subordinated Debt [Member] | Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Debt Instrument, Unamortized Discount		$ 1
Series B Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred Stock, Par or Stated Value Per Share	$ 1.00
Series D Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Convertible Preferred Stock, Shares Issued upon Conversion	0.3125
Preferred Stock, Dividend Rate, Percentage	120.00%
Manufacturing Operations [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Debt Instrument, Unamortized Discount	$ 39
Manufacturing Operations [Member] | Convertible Subordinated Debt [Member] | Four Point Five Zero Senior Subordinated Convertible Notes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.50%	4.75%
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Long-term Debt, Fair Value				$ 177
Debt Instrument, Unamortized Discount		$ 0	$ 5
Manufacturing Operations [Member] | Convertible Subordinated Debt [Member] | Four Point Seven Five Senior Subordinated Convertible Notes [Member] [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.75%
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Long-term Debt, Fair Value				367
Debt Instrument, Convertible, Carrying Amount of Equity Component		$ 44		$ 22
Debt Instrument, Unamortized Discount		$ 5	$ 14
Manufacturing Operations [Member] | Convertible Subordinated Debt [Member] | Six Point Six Two Five Senior Subordinated Convertible Notes [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.625%