| **Selected Quarterly Financial Data (unaudited) (Tables)**     | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       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| **Quarterly Financial Information Disclosure [Abstract]**      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       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| Schedule of Quarterly Financial Information [Table Text Block] | The following tables provide our Quarterly Condensed Consolidated Statements of Operations and Financial Data: 1st Quarter Ended January 31, 2nd Quarter Ended April 30, (in millions, except for per share data and stock prices)2014 2013 2014 2013Sales and revenues, net$2,208 $2,637 $2,746 $2,526Manufacturing gross margin(A)(B)155 312 240 124Amounts attributable to Navistar International Corporation common shareholders:       Loss from continuing operations, net of tax(C)$(249) $(114) $(298) $(353)Loss from discontinued operations, net of tax1 (9) 1 (21)Net loss$(248) $(123) $(297) $(374)Loss per share attributable to Navistar International Corporation:       Basic:       Continuing operations$(3.07) $(1.42) $(3.66) $(4.39)Discontinued operations0.02 (0.11) 0.01 (0.26) $(3.05) $(1.53) $(3.65) $(4.65)Diluted:       Continuing operations$(3.07) $(1.42) $(3.66) $(4.39)Discontinued operations0.02 (0.11) 0.01 (0.26) $(3.05) $(1.53) $(3.65) $(4.65)Market price range-common stock:       High$41.57 $26.90 $39.45 $37.65Low30.80 18.78 29.08 23.25 3rd Quarter Ended July 31,  4th Quarter Ended October 31, (in millions, except for per share data and stock prices)2014 2013 2014 2013Sales and revenues, net$2,844 $2,861 $3,008 $2,751Manufacturing gross margin(A)(B)389 273 335 147Amounts attributable to Navistar International Corporation common shareholders:       Loss from continuing operations, net of tax(C)$(3) $(237) $(72) $(153)Income (loss) from discontinued operations, net of tax1 (10) — (1)Net loss$(2) $(247) $(72) $(154)Earnings (loss) per share attributable to Navistar International Corporation:      Basic:       Continuing operations$(0.04) $(2.94) $(0.88) $(1.90)Discontinued operations0.02 (0.12) — (0.01) $(0.02) $(3.06) $(0.88) $(1.91)Diluted:       Continuing operations$(0.04) $(2.94) $(0.88) $(1.90)Discontinued operations0.02 (0.12) — (0.01) $(0.02) $(3.06) $(0.88) $(1.91)Market price range-common stock:       High$39.41 $38.81 $40.17 $39.79Low32.45 25.56 29.54 31.88_______________________(A)    Manufacturing gross margin is calculated by subtracting Costs of products sold from Sales of manufactured products, net. (B)   We record adjustments to our product warranty accrual to reflect changes in our estimate of warranty costs for products sold in prior periods. Such adjustments typically occur when claims experience deviates from historic and expected trends. In the third quarter of 2014, we recognized a benefit for adjustments to pre-existing warranties of $(29) million.  The benefit is comprised of a benefit for changes in estimates of $(59) million, partially offset by a $30 million correction of prior-period errors, primarily related to pre-existing warranties. In the fourth quarter of 2014, we recognized a benefit for adjustments to pre-existing warranties of $(10) million compared to a charge for adjustments to pre-existing warranties of $152 million in the fourth quarter of 2013. The $(10) million benefit recorded in the fourth quarter of 2014 is comprised of a benefit for changes in estimates of $(35) million, partially offset by the fourth quarter impact of $25 million relating to the correction of prior-period errors as discussed in Note 1, 2014 Out-Of-Period Adjustments. (C)In the second quarter of 2014, the company recognized a non-cash charge of $149 million for the impairment of certain intangible assets of our Brazilian engine reporting unit. Due to the economic downturn in Brazil which resulted in a continued decline in actual and forecasted results, we tested the goodwill of our Brazilian engine reporting unit and trademark for potential impairment. As a result, we determined that the entire $142 million balance of goodwill and $7 million of trademark were impaired. In the fourth quarter of 2013, our North America Truck segment recorded a non-cash charge of $77 million to reflect impairment of goodwill as a result of   changes in our organizational and reporting structures, which resulted in a change in certain of our reporting units. The impairment charges were included in Asset impairment charges. Also in the fourth quarter of 2013, the Company met the criteria necessary to apply the exception within the intraperiod tax allocation rules. As a result, the Company recorded an income tax benefit of $220 million, which was recorded in Income tax benefit (expense) related to continuing operations. |

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| - Definition
Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=35737889&loc=d3e1280-108306
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