| **Consolidated Statements of Stockholders' Equity (Deficit) (USD $)In Millions**                 | Total                                                                                                     | Preferred Stock [Member]                                                                                                                               | Common Stock [Member]                                                                                                                               | Additional Paid-in Capital [Member]                                                                                                                                                     | Retained Earnings [Member]                                                                                                                                     | Accumulated Other Comprehensive Income (Loss) [Member]                                                                                                                            | Treasury Stock [Member]                                                                                                                                   | Noncontrolling Interest [Member]                                                                                                                                |
|--------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Stockholders' Equity balance at beginning of period at Oct. 31, 2013                             | $ (3,605)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest                   | $ 3us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_PreferredStockMember | $ 9us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember | $ 2,477us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                     | $ (4,063)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember | $ (1,824)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (251)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember | $ 44us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_NoncontrollingInterestMember |
| Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Tax             | 16nav_AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtTax                             |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Net loss attributable to Navistar International Corporation                                      | (545)us-gaap_NetIncomeLoss                                                                                |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Net income (loss)                                                                                | (525)us-gaap_ProfitLoss                                                                                   |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Total other comprehensive income                                                                 | 36us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent                                 |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Less: Net income attributable to non-controlling interests                                       | 20us-gaap_NetIncomeLossAttributableToNoncontrollingInterest                                               |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Transfer from redeemable equity securities upon exercise or expiration of stock options          | 2us-gaap_AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock           |                                                                                                                                                   |                                                                                                                                                | 2us-gaap_AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember           |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Stock-based compensation                                                                         | 9us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |                                                                                                                                                   |                                                                                                                                                | 9us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Stock ownership programs                                                                         | 17us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan                                          |                                                                                                                                                   |                                                                                                                                                | (8)us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                         |                                                                                                                                                           |                                                                                                                                                                              | 25us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                      |                                                                                                                                                            |
| Adjustments to Additional Paid in Capital, Other                                                 | 27us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt                            |                                                                                                                                                   |                                                                                                                                                | 27us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                            |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Tax             | (5)nav_AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtRepurchase                     |                                                                                                                                                   |                                                                                                                                                | (5)nav_AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtRepurchase/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                     |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Dividends paid by subsidiaries to non-controlling interest                                       | (30)us-gaap_PaymentsOfDividendsMinorityInterest                                                           |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      | (30)us-gaap_PaymentsOfDividendsMinorityInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_NoncontrollingInterestMember                                    |
| Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Repurchase, Tax | 3nav_AdjustmentstoAdditionalPaidinCapitalEquityComponentofConvertibleDebtRepurchaseTax                    |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Stockholders' Equity balance at end of period at Apr. 30, 2014                                   | (4,074)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest                     | 3us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_PreferredStockMember   | 9us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember   | 2,502us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                       | (4,608)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember   | (1,788)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember   | (226)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember   | 34us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_NoncontrollingInterestMember   |
| Stockholders' Equity balance at beginning of period at Oct. 31, 2014                             | (4,620)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest                     | 3us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_PreferredStockMember   | 9us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember   | 2,500us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                       | (4,682)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember   | (2,263)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember   | (221)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember   | 34us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_NoncontrollingInterestMember   |
| Net loss attributable to Navistar International Corporation                                      | (106)us-gaap_NetIncomeLoss                                                                                |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Net income (loss)                                                                                | (90)us-gaap_ProfitLoss                                                                                    |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Total other comprehensive income                                                                 | (21)us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent                               |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Less: Net income attributable to non-controlling interests                                       | 16us-gaap_NetIncomeLossAttributableToNoncontrollingInterest                                               |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Transfer from redeemable equity securities upon exercise or expiration of stock options          | 1us-gaap_AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock           |                                                                                                                                                   |                                                                                                                                                | 1us-gaap_AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember           |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Stock-based compensation                                                                         | 6us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |                                                                                                                                                   |                                                                                                                                                | 6us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      |                                                                                                                                                            |
| Stock ownership programs                                                                         | (1)us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan                                         |                                                                                                                                                   |                                                                                                                                                | (9)us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                                         |                                                                                                                                                           |                                                                                                                                                                              | 8us-gaap_StockIssuedDuringPeriodValueEmployeeStockOwnershipPlan/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember                       |                                                                                                                                                            |
| Dividends paid by subsidiaries to non-controlling interest                                       | (20)us-gaap_PaymentsOfDividendsMinorityInterest                                                           |                                                                                                                                                   |                                                                                                                                                |                                                                                                                                                                                    |                                                                                                                                                           |                                                                                                                                                                              |                                                                                                                                                      | (20)us-gaap_PaymentsOfDividendsMinorityInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_NoncontrollingInterestMember                                    |
| Stockholders' Equity balance at end of period at Apr. 30, 2015                                   | $ (4,745)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest                   | $ 3us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_PreferredStockMember | $ 9us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_CommonStockMember | $ 2,498us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AdditionalPaidInCapitalMember                     | $ (4,788)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_RetainedEarningsMember | $ (2,284)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (213)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_TreasuryStockMember | $ 30us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_StatementEquityComponentsAxis= us-gaap_NoncontrollingInterestMember |

| X                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Repurchase
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No definition available.
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| - Definition
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No definition available.
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| - Definition
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No definition available.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of decrease (increase) in additional paid in capital (APIC) for the increase in carrying amount of redeemable preferred stock.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of Net Income (Loss) attributable to noncontrolling interest.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after tax of other comprehensive income (loss) attributable to parent entity.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
+ References
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| - Definition
Aggregate value of stock issued during the period as a result of employee stock ownership plan (ESOP).
+ References
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