| **Summary of Significant Accounting Policies - Narrative (Details) $ in Millions**              | 3 Months Ended |         |
|-------------------------------------------------------------------------------------------------|----------------|---------|
||
| **Accounting Policies [Line Items]**                                                            |           |    |   |
| Costs of products sold                                                                          | $ 1,370        | $ 1,466 |   |
| Net loss attributable to Navistar International Corporation                                     | $ (62)         | (33)    |   |
| Number Of Segments | segments                                                                   | 4              |    |   |
| Goodwill                                                                                        | $ 38           |    | $ 38 |
| Sales of manufactured products, net                                                             | 1,629          | 1,730   |   |
| Interest expense                                                                                | 82             | 81      |   |
| Capital expenditures                                                                            | 46             | 29      |   |
| Proceeds from financed lease obligations                                                        | 8              | 7       |   |
| Product Warranty Accrual, Preexisting, Increase (Decrease)                                      | $ (17)         | 5       |   |
| Unionized Employees Concentration Risk [Member] | Number Of Employees Hourly Workers [Member]   |           |    |   |
| **Accounting Policies [Line Items]**                                                            |           |    |   |
| Concentration Risk Number Of Employees | employees                                              | 5,500          |    |   |
| concentration risk number of employees percentage                                               | 83.00%         |    |   |
| Unionized Employees Concentration Risk [Member] | Number of Employees Salaried Workers [Member] |           |    |   |
| **Accounting Policies [Line Items]**                                                            |           |    |   |
| Concentration Risk Number Of Employees | employees                                              | 300            |    |   |
| concentration risk number of employees percentage                                               | 6.00%          |    |   |
| North America Truck [Member]                                                                    |           |    |   |
| **Accounting Policies [Line Items]**                                                            |           |    |   |
| Interest expense                                                                                | $ 0            | 0       |   |
| Capital expenditures                                                                            | 43             | 25      |   |
| Extended Warranty Programs [Member]                                                             |           |    |   |
| **Accounting Policies [Line Items]**                                                            |           |    |   |
| Deferred Revenue, Revenue Recognized                                                            | 34             | $ 38    |   |
| Deferred Revenue                                                                                | $ 317          |    | $ 325 |

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concentration risk number of employees percentage
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Proceeds from finance lease obligations
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| - Definition
Total costs related to goods produced and sold during the reporting period.
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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.
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Amount of revenue recognized that was previously reported as deferred or unearned revenue.
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
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| - Definition
Amount of the cost of borrowed funds accounted for as interest expense.
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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.
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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
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Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties.
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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.
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