| **Summary of Significant Accounting Policies (Tables)**                                                    | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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| **Accounting Policies [Abstract]**                                                                         | Â                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Schedule of Change in Accounting Principle Revised Consolidated Statement of Operations [Table Text Block] | The following table sets forth the effects of the change on our Consolidated Statement of Operations for the three months ended July 31, 2011:   As ComputedUnder theRatableMethod As ReportedUnder thePerformance-Based Method Effect ofChange(in millions, except per share data)      Selling, general and administrative expenses $338 $334 $(4)Net income 1,405 1,409 4Net income attributable to Navistar International Corporation 1,396 1,400 4Basic earnings per share attributable to Navistar International Corporation 19.04 19.10 0.06Diluted earnings per share attributable to Navistar International Corporation 18.18 18.24 0.06The following table sets forth the effects of the change on our Consolidated Statement of Operations for the nine months ended July 31, 2011:   As ComputedUnder theRatableMethod As ReportedUnder thePerformance-Based Method Effect ofChange(in millions, except per share data)      Selling, general and administrative expenses $1,028 $1,006 $(22)Net income 1,481 1,503 22Net income attributable to Navistar International Corporation 1,446 1,468 22Basic earnings per share attributable to Navistar International Corporation 19.84 20.13 0.29Diluted earnings per share attributable to Navistar International Corporation 18.75 19.04 0.29The following table sets forth the effects of the revision on our Consolidated Statement of Operations for the three months ended July 31, 2010:   As  PreviouslyReported Revisions forChange inAccountingPrinciple As Revised(in millions, except per share data)      Selling, general and administrative expenses $360 $20 $380Net income 149 (20) 129Net income attributable to Navistar International Corporation 137 (20) 117Basic earnings per share attributable to Navistar International Corporation 1.89 (0.28) 1.61Diluted earnings per share attributable to Navistar International Corporation 1.83 (0.27) 1.56The following table sets forth the effects of the revision on our Consolidated Statement of Operations for the nine months ended July 31, 2010:   As  PreviouslyReported Revisions forChange inAccountingPrinciple As Revised(in millions, except per share data)      Selling, general and administrative expenses $1,070 $5 $1,075Net income 222 (5) 217Net income attributable to Navistar International Corporation 184 (5) 179Basic earnings per share attributable to Navistar International Corporation 2.56 (0.07) 2.49Diluted earnings per share attributable to Navistar International Corporation 2.51 (0.07) 2.44 |
| Schedule of Change in Accounting Principle Revised Statement of Cash Flow [Table Text Block]               | The following table sets forth the effects of the revision on our Condensed Consolidated Statement of Cash Flows for the nine months ended July 31, 2010:   As PreviouslyReported Revisions forChange inAccountingPrinciple As Revised(in millions)      Net income $222 $(5) $217Changes in other assets and liabilities, exclusive of the effects of businesses acquired and disposed 29 5 34The following table sets forth the effects of the change on our Condensed Consolidated Statement of Cash Flows for the nine months ended July 31, 2011:   As ComputedUnder theRatableMethod As ReportedUnder thePerformance-BasedMethod Effect ofChange(in millions)      Net income $1,481 $1,503 $22Changes in other assets and liabilities, exclusive of the effects of businesses acquired and disposed 103 81 (22)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Schedule of Change in Accounting Principle Revised Statement of Stockholders Equity [Table Text Block]     | The following table sets forth the effects of the revision on our Consolidated Statement of Stockholders’ Deficit as of July 31, 2010:   As of                        July 31, 2010(in millions)  Stockholders’ deficit, as previously reported $(1,049)Effect of revision adjustments on net income for the nine months ended July 31, 2010 (5)Stockholders’ deficit, as revised $(1,054)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Schedule of Change in Accounting Principle Revised Balance Sheet [Table Text Block]                        | The following table sets forth the effects of the change on our Consolidated Balance Sheet as of July 31, 2011:   As ComputedUnder theRatableMethod As ReportedUnder thePerformance-Based Method Effect ofChange(in millions)      Other current liabilities $1,141 $1,119 $(22)Accumulated deficit (432) (410) 22                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Accrued product liability and deferred warranty revenue activity                                           | Accrued product warranty and deferred warranty revenue activity is as follows:   Nine Months Ended July 31,  2011 2010(in millions)    Accrued product warranty and deferred warranty revenue, at beginning of period $506 $492Costs accrued and revenues deferred 281 175Adjustments to pre-existing warranties(A) 66 34Payments and revenues recognized (288) (218)Accrued product warranty and deferred warranty revenue, at end of period 565 483Less: Current portion 254 244Noncurrent accrued product warranty and deferred warranty revenue $311 $239_______________(A)Adjustments to pre-existing warranties 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 and are also impacted by authorized field campaigns. In the second quarter of 2011, we recorded adjustments for changes in estimates of $27 million, or $0.34 per diluted share.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |

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Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.
+ References
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