Loss Per Share Attributable to Navistar International Corporation - Narrative (Details) (USD $)	3 Months Ended			9 Months Ended			3 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended			3 Months Ended	1 Months Ended
	Jul. 31, 2014	Apr. 30, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014 Convertible Debt Securities [Domain]	Jul. 31, 2014 2014 [Member]	Jul. 31, 2013 2014 [Member]	Jul. 31, 2014 2014 [Member]	Jul. 31, 2013 2014 [Member]	Oct. 31, 2009 2014 [Member] Convertible Debt Securities [Domain]	Jul. 31, 2014 2014 [Member] Convertible Debt Securities [Domain]	Jul. 31, 2014 2018 [Member]	Jul. 31, 2014 2018 [Member]	Jul. 31, 2014 2019 [Member]	Jul. 31, 2014 2019 [Member]	Jul. 31, 2014 Convertible Subordinated Debt [Member] Manufacturing Operations [Member]	Jul. 31, 2014 Convertible Subordinated Debt [Member] Manufacturing Operations [Member] Convertible Debt Securities [Domain]	Oct. 31, 2009 Call Option [Member] Convertible Subordinated Debt [Member]	Jul. 31, 2014 Call Option [Member] Convertible Subordinated Debt [Member] Manufacturing Operations [Member]	Oct. 31, 2009 Three Point Zero Percent Senior Subordinated Convertible Notes [Member] Call Option [Member] Convertible Subordinated Debt [Member] Manufacturing Operations [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Ratio						17.1233						19.891					18.4946
Debt Instrument Convertible Conversion Ratio Basis						$ 1,000						$ 1,000						$ 1,000
Option Indexed to Issuer's Equity, Strike Price											50.27									54.07	50.27
Debt Instrument, Convertible, Conversion Price						$ 58.40
Shares of Call Options Unwound	8,000,000
Investment Warrants, Exercise Price						$ 60.14
Shares of Warrants Unwound	6,523,319	6,523,319
Option Indexed to Issuer's Equity, Indexed Shares																			11,337,870		11,337,870
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	23,800,000		29,500,000	26,200,000	28,900,000
Shares related to warrants	4,800,000		11,300,000	7,000,000	11,300,000
Shares related to convertible notes							3,300,000	11,300,000	6,000,000	11,300,000			3,400,000	3,400,000	7,600,000	5,100,000