| **Stockholders' Deficit Accumulated Other Comprehensive Income (Details) (USD $)In Millions, unless otherwise specified**                          | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|----------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
||
| **Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]**                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                                            | $ (2,290)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                             | $ (1,861)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                             | $ (2,263)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | $ (1,824)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax |
| Other comprehensive loss before reclassifications                                                                                                  | (27)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                      | 47us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                        | (86)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax | (16)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax |
| Amounts reclassified out of accumulated other comprehensive loss                                                                                   | 33us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                       | 26us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                       | 65us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax | 52us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax |
| Net current-period other comprehensive income (loss)                                                                                               | 6us-gaap_OtherComprehensiveIncomeLossNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                                                | 73us-gaap_OtherComprehensiveIncomeLossNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                                               | (21)us-gaap_OtherComprehensiveIncomeLossNetOfTax | 36us-gaap_OtherComprehensiveIncomeLossNetOfTax |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                                               | (2,284)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                               | (1,788)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax                                                                                                                                                                                                                                                                                                                                                                                                                               | (2,284)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax | (1,788)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax |
| **Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]**                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Total before tax                                                                                                                                   | (57)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest                                                                                                                                                                                                                                                                                                                                                                                           | (287)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest                                                                                                                                                                                                                                                                                                                                                                                          | (90)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | (527)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |
| Tax expense                                                                                                                                        | (18)us-gaap_IncomeTaxExpenseBenefit                                                                                                                                                                                                                                                                                                                                                                                                                                                          | (23)us-gaap_IncomeTaxExpenseBenefit                                                                                                                                                                                                                                                                                                                                                                                                                                                          | (25)us-gaap_IncomeTaxExpenseBenefit | (11)us-gaap_IncomeTaxExpenseBenefit |
| Net income (loss) attributable to Navistar International Corporation                                                                               | (64)us-gaap_NetIncomeLoss                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | (297)us-gaap_NetIncomeLoss                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | (106)us-gaap_NetIncomeLoss | (545)us-gaap_NetIncomeLoss |
| Accumulated Net Unrealized Investment Gain (Loss) [Member]                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| **Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]**                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                                            | 1us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                                    | 0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                                    | 1us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember | 0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
| Other comprehensive loss before reclassifications                                                                                                  | 0us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                        | 0us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                        | 0us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember | 0us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
| Amounts reclassified out of accumulated other comprehensive loss                                                                                   | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                       | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                       | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
| Net current-period other comprehensive income (loss)                                                                                               | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                                               | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                                               | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember | 0us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                                               | 1us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                                    | 0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember                                                                                                                                                                                                                                                                                                                                    | 1us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember | 0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember |
| Accumulated Translation Adjustment [Member]                                                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| **Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]**                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                                            | (186)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                          | (137)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                          | (127)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember | (75)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember |
| Other comprehensive loss before reclassifications                                                                                                  | (27)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                               | 48us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                 | (86)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember | (14)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember |
| Amounts reclassified out of accumulated other comprehensive loss                                                                                   | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                 | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                 | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember | 0us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember |
| Net current-period other comprehensive income (loss)                                                                                               | (27)us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                                      | 48us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                                        | (86)us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember | (14)us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                                               | (213)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                          | (89)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember                                                                                                                                                                                                                                                                                                                                           | (213)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember | (89)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedTranslationAdjustmentMember |
| Pension Benefits                                                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| **Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]**                                                                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                                            | (2,105)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                                | (1,724)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                                | (2,137)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | (1,749)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Other comprehensive loss before reclassifications                                                                                                  | 0us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                          | (1)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                        | 0us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | (2)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Amounts reclassified out of accumulated other comprehensive loss                                                                                   | 33us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                        | 26us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                        | 65us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | 52us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Net current-period other comprehensive income (loss)                                                                                               | 33us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                                                | 25us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                                                | 65us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | 50us-gaap_OtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                                               | (2,072)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                                | (1,699)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                                                                                                                                | (2,072)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | (1,699)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Benefits                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| **Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]**                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Total before tax                                                                                                                                   | 33us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 66us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |   |
| Tax expense                                                                                                                                        | 0us-gaap_IncomeTaxExpenseBenefit/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | (1)us-gaap_IncomeTaxExpenseBenefit/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |   |
| Net income (loss) attributable to Navistar International Corporation                                                                               | 33us-gaap_NetIncomeLoss/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 65us-gaap_NetIncomeLoss/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |   |
| Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension Benefits | Selling, General and Administrative Expenses [Member] |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| **Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]**                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |   |
| Amortization of prior service costs                                                                                                                | (1)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | (1)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | (2)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | (2)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Amortization of actuarial loss                                                                                                                     | (34)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember          | 27us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember            | (68)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember | 54us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |
| Total reclassifications for the period (net of tax of $0 at both dates)                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | $ 26us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember                         |   | $ 52us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax/ us-gaap_IncomeStatementLocationAxis= us-gaap_SellingGeneralAndAdministrativeExpensesMember/ us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis= us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember/ us-gaap_StatementEquityComponentsAxis= us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| - Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
+ References
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| - Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.
+ References
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| - Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
+ 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 before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.
+ References
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| - Definition
Amount after tax, before reclassification adjustments of other comprehensive income (loss).
+ References
No definition available.
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| - Definition
Amount after tax and reclassification adjustments of other comprehensive income (loss).
+ References
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| - Definition
Amount before tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.
+ References
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| - Definition
Amount after tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit) for pension and other postretirement defined benefit plans.
+ References
No definition available.
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| - Definition
Amount after tax of reclassification adjustments of other comprehensive income (loss).
+ References
No definition available.
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