| **Segment Reporting**            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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| **Segment Reporting [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     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| Segment Reporting                | Segment reportingThe following is a description of our four reporting segments:•Our Truck segment manufactures and distributes a full line of Class 4 through 8 trucks, buses and military vehicles under the International and IC Bus (“IC”) brands. Our Truck segment also produces chassis for motor homes and commercial step-van vehicles under the Workhorse brand and recreational vehicles under the Monaco family of brands. In an effort to strengthen and maintain our dealer network, this segment occasionally acquires and operates dealer locations for the purpose of transitioning ownership.•Our Engine segment designs and manufactures diesel engines for use globally, in Class 3 through 8 vehicles, as well as off-road applications.  In North America, these engines primarily go into our Class 6 and 7 medium trucks and buses and Class 8 heavy trucks, and are sold to original equipment manufacturers (“OEMs”).  In addition, our Engine segment produces diesel engines in Brazil primarily for distribution in South America under the MWM brand for sale to OEMs. In all other areas of the world, including North America, engines are sold under the MaxxForce brand name.  To control cost and technology, our Engine segment has expanded its operations to include PPT, a components company focused on air, fuel, and aftertreatment systems to meet more stringent Euro and EPA emission standards. Also included in the Engine segment are the operating results of BDP, which manages the sourcing, merchandising, and distribution of certain service parts for vehicles we and Ford sell in North America.•Our Parts segment provides customers with proprietary products needed to support the International commercial and military truck, IC bus, WCC chassis, and MaxxForce engine lines. Our Parts segment also provides a wide selection of other standard truck, trailer, and engine aftermarket parts. At October 31, 2011, this segment operated eleven regional parts distribution centers that provide 24-hour availability and shipment.•Our Financial Services segment provides retail, wholesale, and lease financing of products sold by the Truck and Parts segments and their dealers within the U.S. and Mexico, as well as financing for wholesale accounts and selected retail accounts receivable. Corporate contains those items that are not included in our four segments.Segment Profit (Loss)We define segment profit (loss) as net income (loss) attributable to Navistar International Corporation excluding income tax benefit (expense). Selected financial information is as follows:•The UAW master contract and non-represented employee profit sharing, annual incentive compensation, and the costs of contingent contributions to the Supplemental Trust are included in corporate expenses, if applicable. •Interest expense and interest income for the manufacturing operations are reported in corporate expenses. •Certain sales to our dealers include interest-free periods that vary in length. The Financial Services segment finances these sales and our Truck segment subsidizes and reimburses the Financial Services segment for those finance charges. •Intersegment purchases and sales between the Truck and Engine segments are recorded at our best estimates of arms-length pricings. During 2010 and 2009, MaxxForce Big-Bore engine program was treated as a joint program with the Truck and Engine segments sharing in certain costs of the program. •Beginning in 2011, certain purchases from the Engine segment by the Parts segment, primarily related to PPT, are recorded at market-based pricing.  All other intersegment purchases from the Truck and Engine segments by the Parts segment are recorded at standard production cost. •We allocate “access fees” to the Parts segment from the Truck and Engine segments for certain engineering and product development costs, depreciation expense, and selling, general and administrative expenses incurred by the Truck and Engine segments based on the relative percentage of certain sales, as adjusted for cyclicality. •The Financial Services segment provides the manufacturing operations, primarily our Truck and Parts segments, financing services that account for a significant share of its financing revenue. Certain sales financed by the Financial Services segment, primarily NFC, require the manufacturing operations, primarily the Truck segment, to share a portion of customer losses.•Beginning in 2009, as a result of higher costs of borrowings our Financial Services segment began charging the manufacturing operations higher fees and interest rates for its funding services.  Effective with the third quarter of 2011, with improvements in its cost of borrowings, the Financial Services segment reduced some of these incremental fees and interest rates through an amendment to the Company's master intercompany agreement. Effective with the fourth quarter of 2011, the Company's master intercompany agreement was again amended to provide for the Financial Services segment to reimburse the manufacturing operations for fees and financing revenue when the Financial Services segment exceeds a minimum interest coverage ratio. As a result of the amendment, in the fourth quarter of 2011 the Financial Services segment reimbursed the manufacturing operations $11 million of financing fees and revenues.          •Beginning in 2011, we allocate gains and losses on commodities derivatives to the segment to which the underlying commodities relate.  Previously, the impacts of commodities derivatives were not material and were recorded in Corporate.•Other than the items discussed above, the selected financial information presented below is recognized in accordance with our policies described in Note 1, Summary of significant accounting policies.   Truck(A) Engine(A)(B) Parts FinancialServices(C) CorporateandEliminations Total(in millions)            October 31, 2011            External sales and revenues, net $9,690 $2,101 $1,967 $200 $— $13,958Intersegment sales and revenues 48 1,690 188 91 (2,017) —Total sales and revenues, net $9,738 $3,791 $2,155 $291 $(2,017) $13,958Net income attributable to NIC $336 $84 $287 $129 $887 $1,723Income tax benefit — — — — 1,458 1,458Segment profit (loss) $336 $84 $287 $129 $(571) $265Depreciation and amortization $151 $120 $9 $28 $20 $328Interest expense — — — 109 138 247Equity in income (loss) of non-consolidated affiliates (73) (4) 6 — — (71)Segment assets 2,771 1,849 700 3,580 3,391 12,291Capital expenditures(D) 83 172 19 2 153 429  Truck(A) Engine(A) Parts FinancialServices(C) CorporateandEliminations Total(in millions)            October 31, 2010            External sales and revenues, net $8,205 $2,031 $1,690 $219 $— $12,145Intersegment sales and revenues 2 955 195 90 (1,242) —Total sales and revenues, net $8,207 $2,986 $1,885 $309 $(1,242) $12,145Net income (loss) attributable to NIC $424 $51 $266 $95 $(613) $223Income tax expense — — — — (23) (23)Segment profit (loss) $424 $51 $266 $95 $(590) $246Depreciation and amortization $160 $106 $7 $28 $15 $316Interest expense — — — 113 140 253Equity in income (loss) of non-consolidated affiliates (51) (2) 3 — — (50)Segment assets 2,457 1,715 811 3,497 1,250 9,730Capital expenditures 82 116 8 2 26 234  Truck Engine Parts FinancialServices(C) CorporateandEliminations Total(in millions)            October 31, 2009            External sales and revenues, net $7,294 $2,031 $1,975 $269 $— $11,569Intersegment sales and revenues 3 659 198 79 (939) —Total sales and revenues, net $7,297 $2,690 $2,173 $348 $(939) $11,569Net income (loss) attributable to NIC $147 $253 $436 $40 $(556) $320Income tax expense — — — — (37) (37)Segment profit (loss) $147 $253 $436 $40 $(519) $357Depreciation and amortization $178 $118 $7 $25 $16 $344Interest expense — — — 161 90 251Equity in income (loss) of non-consolidated affiliates (5) 45 6 — — 46Segment assets 2,660 1,517 664 4,136 1,051 10,028Capital expenditures(D) 65 56 13 3 14 151_______________ (A)See Note 2, Restructurings and impairments, for further discussion. (B)In 2011, the Engine segment recognized a $10 million gain on the extinguishment of a liability related to an equipment financing transaction.  Previously, such gains were not material and were recorded in Corporate.(C)Total sales and revenues in the Financial Services segment include interest revenues of $285 million, $270 million, and $304 million for 2011, 2010, and 2009, respectively. (D)Exclusive of purchases of equipment leased to others. Sales of vehicles and service parts to the U.S. government were 13%, 15%, 25% of consolidated sales and revenues for 2011, 2010, and 2009, respectively. Sales of vehicles and service parts to the U.S. government are reported in our Truck and Parts segments. Information concerning principal geographic areas for the years ended October 31, 2011, 2010, and 2009 is as follows:  2011 2010 2009(in millions)     Sales and revenues:     United States$9,098 $8,728 $9,762Canada1,071 1,006 748Mexico1,550 609 467Brazil1,190 961 638Other1,049 841 454 2011 2010(in millions)   Long-lived assets:(A)   United States$1,340 $1,277Canada83 126Mexico152 148Brazil519 476Other29 1__________________________(A)Long-lived assets consist of Property and equipment, net, Goodwill, and Intangible assets, net. |

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| - Definition
The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.
+ References
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